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Zoltán Harman

addressMax-Planck-Institut für Kernphysik (MPIK)
Max Planck Institute for Nuclear Physics
Saupfercheckweg 1
69117 Heidelberg
Germany
emailharman@mpi-hd.mpg.de
fax+ 49 (0)6221 516-152
phone+ 49 (0)6221 516-170
officeBO361b
external databasesGoogle Scholar

Education History

  • 2014: Habilitation and Venia Legendi in physics Heidelberg University, Germany
  • 2000-2004: Ph.D. in physics Justus Liebig University Giessen, Germany
  • 1995-2000: M.Sc. in physics Budapest University of Technology and Economics, Hungary Physics studies also at the Eötvös Loránd University, Budapest, Hungary
  • 1998-1999: Translators' and Interpreters' Course, English language Budapest University of Technology and Economics, Hungary
  • 1991-1995: Katalin Varga Secondary School, Szolnok, Hungary

Employment History

  • 2009-: Leading scientist, Max Planck Institute for Nuclear Physics, Heidelberg, Germany
  • 2008-2013: Researcher, ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
  • 2005-2008: Postdoctoral fellow, Max Planck Institute for Nuclear Physics, Heidelberg, Germany
  • 2000-2004: Scientific fellow, Justus Liebig University Giessen, Germany

Scholarships, external grants

  • 2012, 2013: EMMI Visiting Professor Scholarship for Vladimir Yerokhin (a total of 6 months)
  • 2005-2007: Postdoctoral scholarship of the Max Planck Society
  • 1999-2000: Erasmus student scholarship

Teaching activities

  • 2022-23, winter term:  Quantum electrodynamics: theory and key experiments, series of lectures with 2 lectures per week (Heidelberg University), together with PD Dr. Wolfgang Quint (GSI Darmstadt/HI Jena)
  • 2022, summer term: Theoretische Physik III (Quantenmechanik), tutorial class (Heidelberg University)
  • 2021-22, winter term: Experimentalphysik III, tutorial class (Heidelberg University)
  • 2021, summer term: Advanced Quantum Theory, chief tutor (Heidelberg University), lecture by PD Dr. Natalia S. Oreshkina
  • 2020-21, winter term: Experimentalphysik III, tutorial class (Heidelberg University)
  • 2020, summer term: Experimentalphysik IV, tutorial class (Heidelberg University)
  • 2019-20, winter term: Quantum electrodynamics: theory and modern experiments, series of lectures with 2 lectures per week (Heidelberg University), together with PD Dr. Wolfgang Quint (GSI Darmstadt/HI Jena)
  • 2019, summer term: Experimentalphysik IV, tutorial class (Heidelberg University)
  • 2018-19, winter term: Advanced atomic, molecular and optical physics, tutorial class (Heidelberg University)
  • 2018, sommer term: Experimentalphysik IV, tutorial class (Heidelberg University)
  • 2017-18, winter term: Advanced atomic, molecular and optical physics, tutorial class (Heidelberg University)
  • 2017, summer term: Advanced quantum theory, series of lectures (Heidelberg University)
  • 2016-17, winter term: Bound-state quantum electrodynamics, series of lectures with 2 lectures per week (Heidelberg University), together with PD Dr. W. Quint (GSI Darmstadt/HI Jena)
  • 2016, sommer term: Ring lecture AMO physics in Heidelberg, one lecture on "Bound-state quantum electrodynamics" (Heidelberg University)
  • 2015-16, winter term: Bound-state quantum electrodynamics, series of lectures with 2 lectures per week, together with PD Dr. W. Quint (GSI Darmstadt/HI Jena)
  • 2015, sommer term: Experimentalphysik IV, tutorial class (Heidelberg University)
  • 2015, sommer term: Ring lecture AMO physics in Heidelberg, one lecture on "Exploring fundamental physics with highly charged ions" (Heidelberg University), together with Dr. S. Tashenov (Heidelberg University)
  • 2014-15, winter term: Fundamental physics in strong Coulomb fields, series of lectures, together with Dr. S. Tashenov (Heidelberg University)
  • 2014, sommer term: Experimentalphysik II, tutorial class (Heidelberg University)
  • 2013-14, winter term: Einführung in die Physik hochgeladener Ionen, series of lectures, co-lecturer: PD Dr. J. R. Crespo López-Urrutia (Heidelberg University)
  • 2013-14, winter term: Seminar Theoretical Quantum Dynamics, with Prof. C. H. Keitel (MPIK/Heidelberg University)
  • 2013, sommer term: Astrophysik mit hochgeladenen Ionen: Theorie und Experiment, series of lectures with lecturer PD Dr. J. R. Crespo López-Urrutia (Heidelberg University)
  • 2013, sommer term: Seminar Theoretical Quantum Dynamics, with Prof. C. H. Keitel (MPIK/Heidelberg University)
  • 2012-13, winter term: Seminar Theoretical Quantum Dynamics, with Prof. C. H. Keitel (MPIK/Heidelberg University)
  • 2012, sommer term: Seminar Theoretical Quantum Dynamics, with Prof. C. H. Keitel (MPIK/Heidelberg University)
  • 2011-12, winter term: Seminar Theoretical Quantum Dynamics, with Prof. C. H. Keitel (MPIK/Heidelberg University)
  • 2008, sommer term: Elektrodynamik, tutorial class (Heidelberg University)
  • 2003-04, winter term: Elektrodynamik, tutorial class (Giessen University)
  • 2003, sommer term: Thermodynamik und statistische Physik, tutorial class (Giessen University)
  • 2002-03, winter term: Quantenphysik II., tutorial class (Giessen University)
  • 2002, summer term: Quantenphysik I., occasional lecture substitution (Giessen University)
  • 2002, summer term: Quantenphysik I., tutorial class (Giessen University)
  • 2001-02, winter term: Quantenmechanik II, tutorial class (Giessen University)
  • 1998-99: student demonstrator at the "Palace of Wonders", interactive scientific exhibition, Budapest, Hungary

Other activities

  • Primary investigator of the ISOQUANT Collaborative Research Centre (SFB1225)
  • Referee for 10+ physics journals and funding agencies
  • Lecturer of the International Max Planck Research School "Quantum Dynamics in Physics, Chemistry and Biology"
  • Member of the German Physical Society (DPG)

Submitted papers

1."Improved access to the fine-structure constant with the simplest atomic systems"
H. Cakir, N. S. Oreshkina, I. A. Valuev, V. Debierre, V. A. Yerokhin, C. H. Keitel, Z. Harman, submitted; arXiv:2006.14261
2."Muonic vacuum polarization correction to the bound-electron g-factor"
N. A. Belov, B. Sikora, R. Weis, V. A. Yerokhin, S. Sturm, K. Blaum, C. H. Keitel, Z. Harman, submitted; arXiv:1610.01340.

Publications in MPIK

Google Scholar
 
96 Atomic mass determination of uranium-238

K. Kromer, C. Lyu, J. Bieron, M. Door, L. Enzmann, P. Filianin, G. Gaigalas, Z. Harman, J. Herkenhoff, W. Huang, C. H. Keitel, S. Eliseev, and K. Blaum
Physical Review C 109, L021301 (2024)

95 Observation of a Low-Lying Metastable Electronic State in Highly Charged Lead by Penning-Trap Mass Spectrometry

K. Kromer, C. Lyu, M. Door, P. Filianin, Z. Harman, J. Herkenhoff, P. Indelicato, C. H. Keitel, D. Lange, Y. N. Novikov, C. Schweiger, S. Eliseev, and K. Blaum
Physical Review Letters 131, 223002 (2023)

94 Hadronic vacuum polarization correction to the bound-electron g factor

E. Dizer and Z. Harman
Physical Review A 108, 042808 (2023)

93 Stringent test of QED with hydrogen-like tin

J. Morgner, B. Tu, C. M. König., T. Sailer, F. Heiße, H. Bekker, B. Sikora, C. Lyu, V. A. Yerokhin, Z. Harman, J. R. Crespo López-Urrutia, C. H. Keitel, S. Sturm, and K. Blaum
Nature 622, 53-57 (2023)
 MPIK press release: Precise testing of quantum electrodynamics
 MPIK-Pressemitteilung: Quantenelektrodynamik auf dem Prüfstand
 MPG press release: When the laws of physics are at stake - Quantum electrodynamics put to the test
 MPG-Presssemitteilung: Wenn Gesetze der Physik auf dem Spiel stehen - Quantenelektrodynamik auf dem Prüfstand
 Nature research briefings: Testing the limits of the standard model of particle physics with a heavy, highly charged ion
 phys.org: A precise test of quantum electrodynamics: Measuring the g factor of electrons in hydrogen-like tin

92 Extreme field calculations for Penning ion traps and corresponding strong laser field scenarios

C. Lyu, B. Sikora, Z. Harman, and C. H. Keitel
Molecular Physics, e2252105 (2023)

91 New Measurement Resolves Key Astrophysical Fe XVII Oscillator Strength Problem

S. Kühn, C. Cheung, N. S. Oreshkina, R. Steinbrügge, M. Togawa, S. Bernitt, L. Berger, J. Buck, M. Hoesch, J. Seltmann, F. Trinter, C. H. Keitel, M. G. Kozlov, S. G. Porsev, M. F. Gu, F. S. Porter, T. Pfeifer, M. A. Leutenegger, Z. Harman, M. S. Safronova, J. R. Crespo López-Urrutia, and C. Shah
Physical Review Letters 129, 245001 (2022)
 Phys. Rev. Lett.: Editors' Suggestion - Open Access
 APS Physics Viewpoint: Getting a Clearer View of Iron Emission Lines
 idw press release: X-ray analysis without doubt - Four-decade enigma of cosmic X-rays solved
 Focus Online: Rätsel im Röntgenspektrum gelöst
 pro-physik.de: Kosmisches Röntgen-Rätsel gelöst
 MPG-Pressemitteilung: Röntgenanalyse ohne Zweifel
 MPIK press release: X-ray analysis without doubt
 MPIK-Pressemitteilung: Röntgenanalyse ohne Zweifel
 Physics Today: Experiment resolves long-standing iron-spectrum discrepancy

90 Testing standard-model extensions with isotope shifts in few-electron ions

V. Debierre, N. S. Oreshkina, I. A. Valuev, Z. Harman, and C. H. Keitel
Physical Review A 106, 062801 (2022)

89 High-precision mass measurement of doubly magic 208Pb

K. Kromer, C. Lyu, M. Door, P. Filianin, Z. Harman, J. Herkenhoff, W. Huang, C. H. Keitel, D. Lange, Y. N. Novikov, C. Schweiger, S. Eliseev, and K. Blaum
The European Physical Journal A: Hadrons and Nuclei 58, 202 (2022)
 Erratum

88 Hadronic vacuum polarization correction to atomic energy levels

S. Breidenbach, E. Dizer, H. Cakir, and Z. Harman
Physical Review A 106, 042805 (2022)

87 Measurement of the bound-electron g-factor difference in coupled ions

T. Sailer, V. Debierre, Z. Harman, F. Heiße, C. König, J. Morgner, B. Tu, A. V. Volotka, C. H. Keitel, K. Blaum, and S. Sturm
Nature 606, 479-483 (2022)
 Nature News & Views: Tiny isotopic difference tests standard model of particle physics
 MPIK press release: Quantum electrodynamics tested 100 times more accurately
 MPIK-Pressemitteilung: Quantenelektrodynamik 100-fach genauerer getestet
 phys.org: Quantum electrodynamics tested 100 times more accurately than ever
 pro-physik.de: Präzisionsprüfung der Quantenelektrodynamik

86 Direct measurement of the 3He+ magnetic moments

A. Schneider, B. Sikora, S. Dickopf, M. Müller, N. S. Oreshkina, A. Rischka, I. A. Valuev, S. Ulmer, J. Walz, Z. Harman, C. H. Keitel, A. Mooser, and K. Blaum
Nature 606, 878-883 (2022)
 MPIK press release: How magnetic is helium-3?
 MPIK-Pressemitteilung: Wie magnetisch ist Helium-3?
 phys.org: Investigating the magnetic properties of helium-3

85 Metastable states of Si observed in a cryogenic storage ring

D. Müll, F. Grussie, K. Blaum, S. George, J. Goeck, M. Grieser, R. von Hahn, Z. Harman, Á. Kálosi, C. H. Keitel, C. Krantz, C. Lyu, O. Novotny, F. Nüsslein, D. Paul, V. C. Schmidt, S. Singh, S. Kumar, X. Urbain, A Wolf, and H. Kreckel
Physical Review A 104, 032811 (2021)

84 Two-photon-exchange corrections to the g factor of Li-like ions

V. A. Yerokhin, C. H. Keitel, and Z. Harman
Physical Review A 104, 022814 (2021)

83 Direct Q-Value Determination of the β Decay of 187Re

P. E. Filianin, C. Lyu, M. Door, K. Blaum, W. J. Huang, M. Haverkort, P. Indelicato, C. H. Keitel, K. Kromer, D. Lange, Y. N. Novikov, A. Rischka, R. X. Schüssler, C. Schweiger, S. Sturm, S. Ulmer, Z. Harman, and S. Eliseev
Physical Review Letters 127, 072502 (2021)
 MPIK press release: Important measuring method of neutrino physics on the test bench
 MPIK-Pressemitteilung: Wichtige Messmethode der Neutrinophysik auf dem Prüfstand
 idw press release: Important measuring method of neutrino physics on the test bench

82 Two-loop virtual light-by-light scattering corrections to the bound-electron g factor

V. Debierre, B. Sikora, H. Cakir, N. S. Oreshkina, V. A. Yerokhin, C. H. Keitel, and Z. Harman
Physical Review A 103, L030802 (2021)

81 Ab initio electronic factors of the A and B hyperfine structure constants for the 5s25p6s 1,3P01 states in Sn ׀

A. Papoulia, S. Schiffmann, J. Bieroń, G. Gaigalas, M. Godefroid, Z. Harman, P. Jönsson, N. S. Oreshkina, P. Pyykkö, and I. I. Tupitsyn
Physical Review A 103, 022815 (2021)

80 Self-energy screening effects in the g factor of Li-like ions

V. A. Yerokhin, K. Pachucki, M. Puchalski, C. H. Keitel, and Z. Harman
Physical Review A 102, 022815 (2020)

79 Interrogating the Temporal Coherence of EUV Frequency Combs with Highly Charged Ions

C. Lyu, S. M. Cavaletto, C. H. Keitel, and Z. Harman
Physical Review Letters 125, 093201 (2020)

78 QED corrections to the g factor of Li- and B-like ions

H. Cakir, V. A. Yerokhin, N. S. Oreshkina, B. Sikora, I. I. Tupitsyn, C. H. Keitel, and Z. Harman
Physical Review A 101, 062513 (2020)

77 Narrow-band hard-x-ray lasing with highly charged ions

C. Lyu, S. M. Cavaletto, C. H. Keitel, and Z. Harman
Scientific Reports 10, 9439 (2020)

76 Structural trends in atomic nuclei from laser spectroscopy of tin

D. T. Yordanov, L. V. Rodríguez, D. L. Balabanski, J. Bieroń, M. L. Bissell, K. Blaum, B. Cheal, J. Ekman, G. Gaigalas, R. F. G. Ruiz, G. Georgiev, W. Gins, M. R. Godefroid, C. Gorges, Z. Harman, H. Heylen, P. Jönsson, A. Kanellakopoulos, S. Kaufmann, C. H. Keitel, V. Lagaki, S. Lechner, B. Maaß, S. Malbrunot-Ettenauer, W. Nazarewicz, R. Neugart, G. Neyens, W. Nörtershäuser, N. S. Oreshkina, A. Papoulia, P. Pyykkö, P. Reinhard, S. Sailer, R. Sánchez, S. Schiffmann, S. Schmidt, L. Wehner, C. Wraith, L. Xie, Z. Xu, and X. Yang
Communications Physics 3, 107 (2020)

75 High Resolution Photoexcitation Measurements Exacerbate the Long-Standing Fe XVII Oscillator Strength Problem

S. Kühn, C. Shah, J. R. Crespo López-Urrutia, K. Fujii, R. Steinbrügge, J. Stierhof, M. Togawa, Z. Harman, N. S. Oreshkina, C. Cheung, M. G. Kozlov, S. G. Porsev, M. S. Safronova, J. C. Berengut, M. Rosner, M. Bissinger, R. Ballhausen, N. Hell, S. Park, M. Chung, M. Hoesch, J. Seltmann, A. S. Surzhykov, V. A. Yerokhin, J. Wilms, F. S. Porter, T. Stöhlker, C. H. Keitel, T. Pfeifer, G. V. Brown, M. A. Leutenegger, and S. Bernitt
Physical Review Letters 124, 225001 (2020)

74 Skyrme-type nuclear interaction as a tool for calculating the finite-nuclear-size correction to atomic energy levels and the bound-electron g factor

I. Valuev, Z. Harman, C. H. Keitel, and N. S. Oreshkina
Physical Review A 101, 062502 (2020)

73 Fifth-force search with the bound-electron g factor

V. Debierre, C. H. Keitel, and Z. Harman
Physics Letters B 807, 135527 (2020)

72 Detection of metastable electronic states by Penning trap mass spectrometry

R. X. Schüssler, H. Bekker, M. Braß, H. Cakir, J. R. Crespo López Urrutia, M. Door, P. E. Filianin, Z. Harman, M. W. Haverkort, W. J. Huang, P. Indelicato, C. H. Keitel, C. M. König., K. Kromer, M. Müller, Y. N. Novikov, A. Rischka, C. Schweiger, S. Sturm, S. Ulmer, S. Eliseev, and K. Blaum
Nature 581, 42-46 (2020)
 Nature News & Views: Mass spectrometry for future atomic clocks
 MPIK press release: Quantum jump tipping the balance
 MPIK-Pressemitteilung: Quantensprung auf der Waage
 MPG press release: Quantum jump tipping the balance
 MPG-Pressemitteilung: Quantensprung auf der Waage
 idw press release: Quantum jump tipping the balance
 phys.org: Successfully measuring infinitesimal change in mass of individual atoms for the first time
 Focus Online: Quantensprung auf der Waage
 wissenschaft.de: Quantensprung auf der Waage
 Physik in unserer Zeit: Quantensprung auf der Waage
 Frankfurter Allgemeine Zeitung: Wie viel wiegt ein Quantensprung?

71 Self-energy-corrected Dirac wave functions for advanced QED calculations in highly charged ions

N. S. Oreshkina, H. Cakir, B. Sikora, V. A. Yerokhin, V. Debierre, Z. Harman, and C. H. Keitel
Physical Review A 101, 032511 (2020)

70 Mass-Difference Measurements on Heavy Nuclides with an eV/c2 Accuracy in the PENTATRAP Spectrometer

A. Rischka, H. Cakir, M. Door, P. Filianin, Z. Harman, W. J. Huang, P. Indelicato, C. H. Keitel, C. M. König, K. Kromer, M. Müller, Y. N. Novikov, R. X. Schüssler, C. Schweiger, S. Eliseev, and K. Blaum
Physical Review Letters 124, 113001 (2020)

69 Theory of the two-loop self-energy correction to the g factor in nonperturbative Coulomb fields

B. Sikora, V. A. Yerokhin, N. S. Oreshkina, H. Cakir, C. H. Keitel, and Z. Harman
Physical Review Research 2, 012002(R) (2020)

68 Detection of the 5p-4f orbital crossing and its optical clock transition in Pr9+

H. Bekker, A. Borschevsky, Z. Harman, C. H. Keitel, T. Pfeifer, P. O. Schmidt, J. R. Crespo López Urrutia, and J. C. Berengut
Nature Communications 10, 5651 (2019)
 MPIK-Pressemitteilung: Hochgeladenes Ion bahnt den Weg zu neuer Physik

67 g Factor of Boronlike Argon 40Ar13+

I. Arapoglou, A. Egl, M. Höcker, T. Sailer, B. Tu, A. Weigel, R. Wolf, H. Cakir, V. A. Yerokhin, N. S. Oreshkina, V. A. Agababaev, A. V. Volotka, D. V. Zinenko, D. A. Glazov, Z. Harman, C. H. Keitel, S. Sturm, and K. Blaum
Physical Review Letters 122, 253001 (2019)
 pro-physik.de: Alphatrap-Experiment liefert erste Ergebnisse
 idw press release: First results of the new Alphatrap experiment
 MPIK-Pressemitteilung: Erste Resultate des neuen ALPHATRAP-Experiments

66 Resonance strengths for KLL dielectronic recombination of highly charged mercury ions and improved empirical Z-scaling law

Z. Harman, C. Shah, A. J. González Martínez, U. D. Jentschura, H. Tawara, C. H. Keitel, J. H. Ullrich, and J. R. Crespo López-Urrutia
Physical Review A 99, 012506 (2019)

65 Improving the accuracy of the muon mass and magnetic moment anomaly via the bound-muon g factor

B. Sikora, H. Cakir, N. Michel, V. Debierre, N. S. Oreshkina, N. Belov, V. A. Yerokhin, C. H. Keitel, and Z. Harman
Physical Review D 97, 111301(R) (2018)

64 Hyperfine splitting in simple ions for the search of the variation of fundamental constants

N. S. Oreshkina, S. M. Cavaletto, N. Michel, Z. Harman, and C. H. Keitel
Physical Review A 96, 030501(R) (2017)

63 Extraction of the electron mass from g-factor measurements on light hydrogenlike ions.

J. Zatorski, B. Sikora, S. G. Karshenboim, S. Sturm, F. Köhler, K. Blaum, C. H. Keitel, and Z. Harman
Physical Review A 96, 012502 (2017)

62 Deterministic strong-field quantum control

S. M. Cavaletto, Z. Harman, T. Pfeifer, and C. H. Keitel
Physical Review A 95, 043413 (2017)

61 Resonance fluorescence in the resolvent-operator formalism

V. Debierre and Z. Harman
Physical Review A 96, 043835 (2017)

60 One-loop electron self-energy for the bound-electron g factor

V. A. Yerokhin and Z. Harman
Physical Review A 95, 060501(R) (2017)

59 Electron-correlation effects in the g factor of light Li-like ions

V. A. Yerokhin, K. Pachucki, M. Puchalski, Z. Harman, and C. H. Keitel
Physical Review A 95, 062511 (2017)

58 Parity violation effects in the Josephson junction of a p-wave superconductor

N. Belov and Z. Harman
Physics Letters. A 380, 3690-3695 (2016)

57 Weighted difference of g factors of light Li-like and H-like ions for an improved determination of the fine-structure constant

V. A. Yerokhin, E. Berseneva, Z. Harman, I. I. Tupitsyn, and C. H. Keitel
Physical Review A 94, 022502 (2016)

56 X-ray fluorescence spectrum of highly charged Fe ions driven by strong free-electron-laser fields

N. S. Oreshkina, S. M. Cavaletto, C. H. Keitel, and Z. Harman
Journal of Physics B: Atomic, Molecular and Optical Physics 49, 094003 (2016)

55 g Factor of Light Ions for an Improved Determination of the Fine-Structure Constant

V. A. Yerokhin, E. Berseneva, Z. Harman, I. I. Tupitsyn, and C. H. Keitel
Physical Review Letters 116, 100801 (2016)
 MPIK-Presseinformation: Neuer Weg zur Feinstrukturkonstante
 pro-physik.de: Neuer Weg zur Feinstrukturkonstante

54 Pair creation in heavy ion channeling

N. Belov and Z. Harman
Physics Letters B 755, 150-154 (2016)

53 Phase reconstruction of strong-field excited systems by transient-absorption spectroscopy

Z. Liu, S. M. Cavaletto, C. Ott, K. Meyer, Y. Mi, Z. Harman, C. H. Keitel, and T. Pfeifer
Physical Review Letters 115, 033003 (2015)

52 Spectroscopy of berylliumlike xenon ions using dielectronic recombination

D. Bernhardt, C. Brandau, Z. Harman, C. Kozhuharov, S. Böhm, F. Bosch, S. Fritzsche, J. Jacobi, S. Kieslich, H. Knopp, F. Nolden, W. Shi, Z. Stachura, M. Steck, T.. Stöhlker, S. Schippers, and A. Müller
Journal of Physics B: Atomic, Molecular and Optical Physics 48, 144008 (2015)

51 Identifications of 5s1/2−5p3/2 and 5s2−5s5p EUV transitions of promethium-like Pt, Ir, Os and Re

H. Bekker, O. O. Versolato, A. Windberger, N. S. Oreshkina, R. Schupp, T. M. Baumann, Z. Harman, C. H. Keitel, P. O. Schmidt, J. Ullrich, and J. Crespo Lopez-Urrutia
Journal of Physics B 48, 144018 (2015)

50 Identification of the Predicted 5s−4f Level Crossing Optical Lines with Applications to Metrology and Searches for the Variation of Fundamental Constants

A. Windberger, J. R. Crespo López-Urrutia, H. Bekker, N. S. Oreshkina, J. C. Berengut, V. Bock, A. Borschevsky, V. A. Dzuba, E. Eliav, Z. Harman, U. Kaldor, S. Kaul, U. I. Safronova, V. V. Flambaum, C. H. Keitel, P. O. Schmidt, J. Ullrich, and O. O. Versolato
Physical Review Letters 114, 150801 (2015)

49 Ion Acceleration by Short Chirped Laser Pulses

J. Li, B. J. Galow, C. H. Keitel, and Z. Harman
Applied Sciences 5, 36-47 (2015)

48 Electron-ion collision spectroscopy: Lithium-like xenon ions

D. Bernhardt, C. Brandau, Z. Harman, C. Kozhuharov, S. Böhm, F. Bosch, S. Fritzsche, J. Jacobi, S. Kieslich, H. Knopp, F. Nolden, W. Shi, Z. Stachura, M. Steck, T.. Stöhlker, S. Schippers, and A. Müller
Physical Review A 91, 012710 (2015)

47 State-selective high-energy excitation of nuclei by resonant positron annihilation

N. Belov and Z. Harman
Physics Letters B 741, 61-64 (2014)

46 Contributions of dielectronic, trielectronic, and metastable channels to the resonant intershell recombination of highly charged silicon ions

T. M. Baumann, Z. Harman, J. Stark, C. Beilmann, G. Liang, P. Mokler, J. Ullrich, and J. R. Crespo López-Urrutia
Physical Review A 90, 052704 (2014)

45 Astrophysical line diagnosis requires non-linear dynamical atomic modeling

N. S. Oreshkina, S. M. Cavaletto, C. H. Keitel, and Z. Harman
Physical Review Letters 113, 143001 (2014)
 Phys. Rev. Lett.: Editors’ suggestion

44 Generation of high-frequency combs locked to atomic resonances by quantum phase modulation

Z. Liu, C. Ott, S. M. Cavaletto, Z. Harman, C. H. Keitel, and T. Pfeifer
New Journal of Physics 16, 093005 (2014)

43 Broadband high-resolution X-ray frequency combs

S. M. Cavaletto, Z. Harman, C. Ott, C. Buth, T. Pfeifer, and C. H. Keitel
Nature Photonics 8, 520-523 (2014)
 MPIK-Pressemitteilung: Ein Kamm aus Röntgenlicht
 Welt der Physik: Ein Kamm aus Röntgenlicht
 Physics World: Plans unveiled for world’s first X-ray frequency comb

42 High-precision measurement of the atomic mass of the electron

S. Sturm, F. Köhler, J. Zatorski, Z. Harman, G. Werth, C. H. Keitel, and K. Blaum
Nature 506, 467-470 (2014)
 Nature News & Views: Fundamental constants: the teamwork of precision
 MPIK-Pressemitteilung: Das Elektron auf der Waage
 MPG press release: Electron on the scale
 pro-physik.de: Präzisionswaage für Elektronen
 Spiegel Online: Präzisionswaage: Den Elefanten zur Mücke gemacht
 Die Welt: Forscher ermitteln die wahre Masse von Elektronen
 Discovery News: Electron Mass Measured to Record-Breaking Precision
 Frankfurter Allgemeine Zeitung: Leichtgewicht auf der Waage
 Wiener Zeitung: Wie viel Masse hat ein Elektron?
 Le Figaro: La masse de l'électron est mieux connue
 El Pais: Precisión de récord para la masa del electrón

41 Major role of multielectronic K-L intershell resonant recombination processes in Li- to O-like ions of Ar, Fe, and Kr

C. Beilmann, Z. Harman, P. H. Mokler, S. Bernitt, C. H. Keitel, J. Ullrich, and J. R. Crespo López-Urrutia
Physical Review A 88, 062706, 1-11 (2013)
 Phys. Rev. A: Editors’ suggestion

40 X-ray frequency combs from optically controlled resonance fluorescence

S. M. Cavaletto, Z. Harman, C. Buth, and C. H. Keitel
Physical Review A 88, 063402 (2013)

39 Nuclear-size self-energy and vacuum-polarization corrections to the bound-electron g factor

V. A. Yerokhin, C. H. Keitel, and Z. Harman
Journal of Physics B: Atomic, Molecular and Optical Physics 46, 245002 (2013)

38 Two-loop QED corrections with closed fermion loops for the bound-electron g factor

V. A. Yerokhin and Z. Harman
Physical Review A 88, 042502 (2013)

37 Coronium in the laboratory: measuring the Fe XIV green coronal line by laser spectroscopy

K. Schnorr, V. Mäckel, N. S. Oreshkina, S. Augustin, F. R. Brunner, Z. Harman, C. H. Keitel, J. H. Ullrich, and J. R. Crespo López-Urrutia
The Astrophysical Journal, Supplement Series 776, 121 (2013)

36 X-Ray Resonant Photoexcitation: Linewidths and Energies of Kα Transitions in Highly Charged Fe Ions

J. K. Rudolph, S. Bernitt, S. W. Epp, R. F. Steinbrügge, C. Beilmann, G. V. Brown, S. Eberle, A. Graf, Z. Harman, N. Hell, M. Leutenegger, A. Müller, K. Schlage, H. -C. Wille, H. Yavas, J. H. Ullrich, and J. R. Crespo López-Urrutia
Physical Review Letters 111, 103002, 1-6 (2013)
 MPIK-Pressemitteilung: Eisen in der Sonne: ein Treibhausgas für Röntgenlicht
 Phys. Rev. Lett.: Editors’ suggestion

35 High-quality multi-GeV electron bunches via cyclotron autoresonance

B. J. Galow, J. Li, Y. I. Salamin, Z. Harman, and C. H. Keitel
Physical Review Special Topics-Accelerators and Beams 16, 081302, 1-6 (2013)

34 X-ray quantum optics

B. W. Adams, C. Buth, S. M. Cavaletto, J. Evers, Z. Harman, C. H. Keitel, A. Pálffy, A. Picón, R. Röhlsberger, Y. Rostovtsev, and K. Tamasaku
Journal of Modern Optics 60, 2-21 (2013)

33 An unexpectedly low oscillator strength as the origin of the Fe XVII emission problem

S. Bernitt, G. V. Brown, J. K. Rudolph, R. F. Steinbrügge, A. Graf, M. Leutenegger, S. Epp, S. Eberle, K. Kubicek, V. Mäckel, M. C. Simon, E. Träbert, E. W. Magee, C. Beilmann, N. Hell, S. Schippers, A. Müller, S. M. Kahn, A. Surzhykov, Z. Harman, C. H. Keitel, J. Clementson, F. S. Porter, W. Schlotter, J. J. Turner, J. H. Ullrich, P. Beiersdorfer, and J. R. Crespo López-Urrutia
Nature 492, 225-228 (2012)
 MPG-Pressemitteilung: Hot iron in the cosmos
 pro-physik.de: Transportable Ionenfalle erklärt Röntgenhimmel

32 Resonance fluorescence in ultrafast and intense x-ray free-electron-laser pulses

S. M. Cavaletto, C. Buth, Z. Harman, E. P. Kanter, S. H. Southworth, L. Young, and C. H. Keitel
Physical Review A 86, 033402, 1-15 (2012)

31 Laser acceleration of proton bunches by petawatt chirped linearly polarized laser pulses

J. Li, Y. Salamin, B. J. Galow, Z. Harman, and C. H. Keitel
Physical Review A 85, 063831, 1-11 (2012)

30 QED calculation of the nuclear magnetic shielding for hydrogenlike ions

V. A. Yerokhin, K. Pachucki, Z. Harman, and C. H. Keitel
Physical Review A 85, 022512 (2012)

29 Nuclear Shape Effect on the g Factor of Hydrogenlike Ions

J. Zatorski, N. S. Oreshkina, C. H. Keitel, and Z. Harman
Physical Review Letters 108, 063005, 1-5 (2012)

28 Electron recombination in dense photonic, electronic and atomic environments

C. Müller, H. Hu, B. Najjari, J. R. Crespo Lopez-Urrutia, Z. Harman, and A.B. Voitkiv
Journal of Physics: Conference Series 388, 012003 (2012)

27 Dense monoenergetic proton beams from chirped laser-plasma interaction

B. Galow, Y. I. Salamin, T. V. Liseykina, Z. Harman, and C. H. Keitel
Physical Review Letters 107, 185002 (2011)
 idw press release: Hochwertige energiereiche und dichte Ionenstrahlen durch Laserbeschleunigung
 pro-physik.de: Laserbeschleunigte Ionenstrahlen für Krebstherapie modelliert

26 Prominent Higher-Order Contributions to Electronic Recombination

C. Beilmann, P. Mokler, S. Bernitt, C. H. Keitel, J. H. Ullrich, J. R. Crespo López-Urrutia, and Z. Harman
Physical Review Letters 107, 143201 (2011)
 Phys. Rev. Lett.: Editors‘ suggestion
 APS Physics (Synopsis): Crowded Recombination
 Pressemitteilung idw: Synchrone Quantensprünge bei Elektronen-Einfang in hochgeladene Ionen
 MPIK-Pressemitteilung: Synchrone Quantensprünge bei Elektronen-Einfang in hochgeladenen Ionen

25 QED Theory of the Nuclear Magnetic Shielding in Hydrogenlike Ions

V. A. Yerokhin, K. Pachucki, C. H. Keitel, and Z. Harman
Physical Review Letters 107, 043004 (2011)

24 g Factor of Hydrogenlike 28Si13+

S. Sturm, A. Wagner, B. Schabinger, J. Zatorski, Z. Harman, W. Quint, G. Werth, C. H. Keitel, and K. Blaum
Physical Review Letters 107, 023002 (2011)
 Phys. Rev. Lett.: Editors’ suggestion
 APS Physics (Synopsis): QED passes with flying colors
 MPG-Pressemitteilung: Quantenelektrodynamik auf dem Prüfstand

23 Higher-order resonant inter-shell electronic recombination for heavy highly charged ions

C. Beilmann, P. H. Mokler, S. Bernitt, Z. Harman, C. H. Keitel, O. Postavaru, J. H. Ullrich, and J. R. Crespo López-Urrutia
Physica Scripta T T144, 014014 (2011)

22 Breit interaction in dielectronic recombination of hydrogenlike uranium

D. Bernhardt, C. Brandau, Z. Harman, C. Kozhuharov, A. Müller, W. Scheid, S. Schippers, E. W. Schmidt, D. Yu, A. N. Artemyev, I. I. Tupitsyn, S. Böhm, F. Bosch, F. J. Currell, B. Franzke, A. Gumberidze, J. Jacobi, P. H. Mokler, F. Nolden, U. Spillman, Z. Stachura, M. Steck, and T.. Stöhlker
Physical Review A 83, 020701(R), 1-4 (2011)

21 High-Precision Metrology of Highly Charged Ions via Relativistic Resonance Fluorescence

O. Postavaru, Z. Harman, and C. H. Keitel
Physical Review Letters 106, 033001 (2011)

20 Optimizing direct intense-field laser acceleration of ions

Z. Harman, Y. Salamin, B. Galow, and C. H. Keitel
Physical Review A 84, 053814 (2011)

19 Intense high-quality medical proton beams via laser fields

B. Galow, Z. Harman, and C. H. Keitel
Optics Express 18, 25950-25957 (2010)

18 Resonant and Near-Threshold Photoionization Cross Sections of Fe14+

M. C. Simon, J. R. C. Lopez-Urrutia, C. Beilmann, M. Schwarz, Z. Harman, S. W. Epp, B. L. Schmitt, T. M. Baumann, E. Behar, S. Bernitt, R. Follath, R. Ginzel, C. H. Keitel, R. Klawitter, K. Kubicek, V. Mackel, P. H. Mokler, G. Reichardt, O. Schwarzkopf, and J. Ullrich
Physical Review Letters 105, 183001 (2010)
 MPG-Pressemitteilung: Der letzte Schrei aus dem Schwarzen Loch
 Astronews: Die letzten Schreie der Materie
 Phys.org: Physicists produce black hole plasma in the lab

17 Strongly Enhanced Recombination via Two-Center Electronic Correlations

C. Müller, A. B. Voitkiv, J. R. López-Urrutia, and Z. Harman
Physical Review Letters 104, 233202 (2010)

16 Photoionization of N3+ and Ar8+ in an electron beam ion trap by synchrotron radiation

M. C. Simon, M. Schwarz, S. W. Epp, C. Beilmann, B. L. Schmitt, Z. Harman, T. M. Baumann, P. H. Mokler, S. Bernitt, R. Ginzel, S. G. Higgins, C. H. Keitel, R. Klawitter, K. Kubicek, V. Mäckel, J. Ullrich, and J. R. Crespo López-Urrutia
Journal of Physics B: Atomic, Molecular and Optical Physics 43, 065003, 1-11 (2010)

15 Isotope shifts in dielectronic recombination : From stable to in-flight-produced nuclei

C. Brandau, C. Kozhuharov, A. Müller, D. Bernhardt, S. Böhm, D. Boutin, F. J. Currell, C. Dimopoulou, B. Franzke, Z. Harman, J. D. Jentschura, C. H. Keitel, H. J. Kluge, Y. S. Kozhedub, R. Krücken, Y. A. Litvinov, F. Nolden, B. O'Rourke, R. Reuschl, S. Schippers, V. M. Shabaev, U. Spillmann, Z. Stachura, M. Steck, T.. Stöhlker, I. I. Tupitsyn, D. F. Winters, and A. Wolf
Journal of Physics: Conference Series 194, 012023 (2009)

14 Intershell trielectronic recombination with K-shell excitation in Kr30+

C. Beilmann, O. Postavaru, L. H. Arntzen, R. Ginzel, C. H. Keitel, V. Mackel, P. H. Mokler, M. C. Simon, H. Tawara, I. I. Tupitsyn, J. Ullrich, J. R. Crespo López-Urrutia, and Z. Harman
Physical Review A 80, 050702 (2009)

13 Direct high-power laser acceleration of ions for medical applications

Y. I. Salamin, Z. Harman, and C. H. Keitel
Physical Review Letters 100, 155004, 1-4 (2008)
 Pressemitteilung idw: Direkte Laser-Beschleunigung von Ionen für medizinische Anwendungen
 Pressemitteilung idw: Direkte Laser-Beschleunigung von Ionen für medizinische Anwendungen uni-protokolle.de: Direkte Laser-Beschleunigung von Ionen für medizinische Anwendungen

12 Nuclear-resonant electron scattering

A. Pálffy and Z. Harman
Physical Review A 77, 042704, 1-11 (2008)

11 Nuclear excitation by electron capture followed by fast x-ray emission

A. Pálffy, Z. Harman, C. Kozhuharov, C. Brandau, C. H. Keitel, W. Scheid, and T. Stöhlker
Physics Letters B 661, 330-334 (2008)

10 Isotope shift in the dielectronic recombination of three-electron ANd57+

C. Brandau, C. Kozhuharov, Z. Harman, A. Müller, S. Schippers, Y. S. Kozhedub, D. Bernhardt, S. Böhm, J. Jacobi, E. W. Schmidt, P. H. Mokler, F. Bosch, H.-J. Kluge, T. Stöhlker, K. Beckert, P. Beller, F. Nolden, M. Steck, A. Gumberidze, R. Reuschl, U. Spillmann, F. J. Currell, I. I. Tupitsyn, V. M. Shabaev, U. D. Jentschura, C. H. Keitel, A. Wolf, and Z. Stachura
Physical Review Letters 100, 073201 (2008)

9 Zeeman splitting and g factor of the 1s22s22p 2P3/2 and 2P1/2 levels in Ar13+

R. Soria Orts, J. R. Crespo López-Urrutia, H. Bruhns, A. J. G. Martinez, Z. Harman, U. D. Jentschura, C. H. Keitel, A. Lapierre, H. Tawara, I. I. Tupitsyn, J. Ullrich, and A. V. Volotka
Physical Review A 76, 052501 (2007)

8 Lifetime determination of the Fe XIV 3s23p 2Po3/2 metastable level

G. Brenner, J. R. Crespo López-Urrutia, Z. Harman, P. H. Mokler, and J. Ullrich
Physical Review A 75, 032504 (2007)

7 Quantum interference between nuclear excitation by electron capture and radiative recombination

A. Palffy, Z. Harman, and W. Scheid
Physical Review A 75, 012709 (2007)

6 Photon angular distribution and nuclear-state alignment in nuclear excitation by electron capture

A. Palffy, Z. Harman, A. Surzhykov, and U. D. Jentschura
Physical Review A 75, 012712 (2007)

5 Exploring Relativistic Many-Body Recoil Effects in Highly Charged Ions

R. Soria Orts, Z. Harman, J. R. Crespo López-Urrutia, A. N. Artemyev, H. Bruhns, A. J. González Martínez, U. D. Jentschura, C. H. Keitel, A. Lapierre, V. Mironov, V. M. Shabaev, H. Tawara, I. I. Tupitsyn, J. Ullrich, and A. V. Volotka
Physical Review Letters 97, 103002, 1-4 (2006)

4 Benchmarking high-field few-electron correlation and QED contributions in Hg75+ to Hg78+ ions: I. Experiment

A. J. González-Martínez, J. R. Crespo López-Urrutia, J. Braun, G. Brenner, H. Bruhns, A. Lapierre, V. Mironov, R. Soria Orts, H. Tawara, M. Trinczek, J. Ullrich, A. N. Artemyev, Z. Harman, U. D. Jentschura, C. H. Keitel, J. H. Scofield, and I. I. Tupitsyn
Physical Review A 73, 052710, 1-10 (2006)

3 Benchmarking high-field few-electron correlation and QED contributions in Hg75+ to Hg78+ ions: II. Theory

Z. Harman, I. I. Tupitsyn, A. N. Artemyev, U. D. Jentschura, C. H. Keitel, A. J. González Martínez, J. R. Crespo López-Urrutia, H. Tawara, and J. Ullrich
Physical Review A 73, 052711, 1-13 (2006)

2 Theory of nuclear excitation by electron capture for heavy ions

A. Pálffy, W. Scheid, and Z. Harman
Physical Review A 73, 012715 (2006)

1 Relativistic electron correlation, quantum electrodynamics and the lifetime of the 1s22s22p 23/2 level in boronlike argon

A. Lapierre, U. D. Jentschura, J. R. Crespo López-Urrutia, J. Braun, G. Brenner, H. Bruhns, D. Fischer, A. J. González Martínez, Z. Harman, W. R. Johnson, C. H. Keitel, V. Mironov, C. J. Osborne, G. Sikler, R. Soria Orts, H. Tawara, I. I. Tupitsyn, J. Ullrich, and A. Volotka
Physical Review Letters 95, 183001, 1-4 (2005)