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University of Regensburg
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Publications

Preprints

  1. Influence of twist angle on ultrafast charge separation in WS2-graphene heterostructures. Niklas Hofmann, Leonard Weigl, Johannes Gradl, Stiven Forti, Domenica Convertino, Camilla Coletti, Isabella Gierz. 5 May 2026 arxiv.org/abs/2605.03480
  2. Influence of sulphur vacancies on ultrafast charge separation in WS2-graphene heterostructures. Johannes Gradl, Niklas Hofmann, Leonard Weigl, Stiven Forti, Neeraj Mishra, Camilla Coletti, Raul Perea-Causin, Ermin Malic, Isabella Gierz. 17 Mar 2026. arxiv.org/abs/2603.16247
  3. Influence of excitation energy on microscopic quantum pathways for ultrafast charge transfer in van der Waals heterostructures. Niklas Hofmann, Johannes Gradl, Leonard Weigl, Stiven Forti, Camilla Coletti, Isabella Gierz. 4 Mar 2025, last revised 17 Mar 2026. arxiv.org/abs/2503.02564

Publications

  1. Influence of doping on non-equilibrium carrier dynamics in graphene. Leonard Weigl, Johannes Gradl, Peter Richter, Domenica Convertino, Stiven Forti, Thomas Seyller, Camilla Coletti and Isabella Gierz015010 (2025) iopscience.iop.org/article/10.1088/2053-1583/ae1bb6
  2. Nonequilibrium carrier dynamics and band structure of graphene on two-dimensional. Maria-Elisabeth Federl, Niklas Witt, Biao Yang, Leonard Weigl, Niklas Hofmann, Johannes Gradl, Ignacio Piquero-Zulaica, Johannes V. Barth, Neeraj Mishra. Phys. Rev. B, 111, 125158 (2025) journals.aps.org/prb/abstract/10.1103/PhysRevB.111.125158
  3. k-Resolved Ultrafast Light-Induced Band Renormalization in Monolayer WS2 on Graphene. N. Hofmann, A. Steinhoff, R. Krause, N. Mishra, G. Orlandini, S. Forti, C. Coletti, T. Wehling and I. Gierz. Nano Lett. 25, 1214 (2025)doi.org/10.1021/acs.nanolett.4c06238
  4. Link between interlayer hybridization and ultrafast charge transfer in WS2-graphene heterostructures. N. Hofmann, L. Weigl, J. Gradl, N. Mishra, G. Orlandini, S. Forti, C. Coletti, S. Latini, L. Xian, A. Rubio, D. Perez Paredes, R. Perea Causin, S. Brem, E. Malic and I. Gierz. 2D Mater. 10, 035025 (2023) iopscience.iop.org/article/10.1088/2053-1583/acdaab
  5. Survival of Floquet−Bloch States in the Presence of Scattering. S. Aeschlimann, S. A. Sato, R. Krause, M. Chávez-Cervantes, U. De Giovannini, H. Hübener, S. Forti, C. Coletti, K. Hanff, K. Rossnagel, A. Rubio, and I. Gierz. Nano Lett. 21, 5028 (2021) pubs.acs.org/doi/10.1021/acs.nanolett.1c00801
  6. Microscopic Understanding of Ultrafast Charge Transfer in van der Waals  Heterostructures. R. Krause, S. Aeschlimann, M. Chávez-Cervantes, R. Perea-Causin, S. Brem, E. Malic, S. Forti, F. Fabbri, C. Coletti, and I. Gierz. Phys. Rev. Lett. 127, 276401 (2021) journals.aps.org/prl/abstract/10.1103/PhysRevLett.127.276401
  7. Ultrafast Charge Separation in Bilayer WS2/Graphene Heterostructure Revealed by Time- and Angle-Resolved Photoemission Spectroscopy. R. Krause, M. Chávez-Cervantes, S. Aeschlimann, S. Forti, F. Fabbri, A. Rossi, C. Coletti, C. Cacho, Y. Zhang, P. E. Majchrzak, R. T. Chapman, E. Springate and I. Gierz. Front. Phys. 9:668149. (2021) www.frontiersin.org/article/10.3389/fphy.2021.668149
  8. Floquet states in dissipative open quantum systems S. A. Sato, U. De Giovannini, S. Aeschlimann, I. Gierz, H. Hübener, and A Rubio J. Phys. B: At. Mol. Opt. Phys. 53, 225601 (2020) iopscience.iop.org/article/10.1088/1361-6455/abb127
  9. Direct evidence for efficient ultrafast charge separation in epitaxial WS2/graphene heterostructures S. Aeschlimann, A. Rossi, M. Chávez-Cervantes, R. Krause, B. Arnoldi, B. Stadtmüller, M. Aeschlimann, S. Forti, F. Fabbri, C. Coletti, and I. Gierz Sci. Adv. 6, eaay0761 (2020) advances.sciencemag.org/content/6/20/eaay0761
  10. Charge Density Wave Melting in One-Dimensional Wires with Femtosecond Subgap Excitation M. Chávez-Cervantes, G. E. Topp, S. Aeschlimann, R. Krause, S. A. Sato, M. A. Sentef, and I. Gierz Phys. Rev. Lett. 123, 036405 (2019) journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.036405
  11. Band structure dynamics in indium wires M. Chávez-Cervantes, R. Krause, S. Aeschlimann, and I. Gierz Phys. Rev. B 97, 201401(R) (2018) journals.aps.org/prb/abstract/10.1103/PhysRevB.97.201401
  12. Probing carrier dynamics in photo-excited graphene with time-resolved ARPES I. Gierz J. Electron. Spectrosc. Relat. Phenom. 219, 53 (2017) www.sciencedirect.com/science/article/abs/pii/S0368204816301657
  13. Ultrafast momentum imaging of pseudospin-flip excitations in graphene S. Aeschlimann, R. Krause, M. Chávez-Cervantes, H. Bromberger, R. Jago, E. Malić, A. Al-Temimy, C. Coletti, A. Cavalleri, and I. Gierz Phys. Rev. B 96, 020301(R) (2017) journals.aps.org/prb/abstract/10.1103/PhysRevB.96.020301
  14. Enhanced electron-phonon coupling in graphene with periodically distorted lattice E. Pomarico, M. Mitrano, H. Bromberger, M. A. Sentef, A. Al-Temimy, C. Coletti, A. Stöhr, S. Link, U. Starke, C. Cacho, R. Chapman, E. Springate, A. Cavalleri, and I. Gierz Phys. Rev. B 95, 024304 (2017) journals.aps.org/prb/abstract/10.1103/PhysRevB.95.024304
  15. Electronic-structural dynamics in graphene I. Gierz and A. Cavalleri Struct. Dyn. 3, 051301 (2016) aca.scitation.org/doi/10.1063/1.4964777
  16. Angle-resolved photoemission spectroscopy with 9-eV photon-energy pulses generated in a gas-filled hollow-core photonic crystal fiber H. Bromberger, A. Ermolov, F. Belli, H. Liu, F. Calegari, M. Chávez-Cervantes, M. T. Li, C. T. Lin, A. Abdolvand, P. St. J. Russell, A. Cavalleri, J. C. Travers, and I. Gierz Appl. Phys. Lett. 9, 091101 (2015) aip.scitation.org/doi/10.1063/1.4929542
  17. Tracking Primary Thermalization Events in Graphene with Photoemission at Extreme Time Scales I. Gierz, F. Calegari, S. Aeschlimann, M. Chávez Cervantes, C. Cacho, R. T. Chapman, E. Springate, S. Link, U. Starke, C. R. Ast, and A. Cavalleri Phys. Rev. Lett. 115, 086803 (2015) journals.aps.org/prl/abstract/10.1103/PhysRevLett.115.086803
  18. Population inversion in monolayer and bilayer graphene I. Gierz, M. Mitrano, J. C. Petersen, C. Cacho, I. C. E. Turcu, E. Springate, A. Stöhr, A. Köhler, U. Starke and A. Cavalleri J. Phys.: Condens. Matter 27 164204 (2015) iopscience.iop.org/article/10.1088/0953-8984/27/16/164204
  19. Phonon-Pump Extreme-Ultraviolet-Photoemission Probe in Graphene: Anomalous Heating of Dirac Carriers by Lattice Deformation I. Gierz, M. Mitrano, H. Bromberger, C. Cacho, R. Chapman, E. Springate, S. Link, U. Starke, B. Sachs, M. Eckstein, T. O. Wehling, M. I. Katsnelson, A. Lichtenstein, and A. Cavalleri Phys. Rev. Lett. 114, 125503 (2015) journals.aps.org/prl/abstract/10.1103/PhysRevLett.114.125503
  20. A fool’s errand I. Gierz Nat. Phys. 11, 12 (2015) www.nature.com/articles/nphys3206
  21. Optically enhanced coherent transport in YBa2Cu3O6.5 by ultrafast redistribution of interlayer coupling W. Hu, S. Kaiser, D. Nicoletti, C. R. Hunt, I. Gierz, M. C. Hoffmann, M. Le Tacon, T. Loew, B. Keimer and A. Cavalleri Nat. Phys. 13, 705 (2104) www.nature.com/articles/nmat3963
  22. Optically induced coherent transport far above Tc in underdoped YBa2Cu3O6+δ S. Kaiser, C. R. Hunt, D. Nicoletti, W. Hu, I. Gierz, H. Y. Liu, M. Le Tacon, T. Loew, D. Haug, B. Keimer, and A. Cavalleri Phys. Rev. B 89, 184516 (2014) journals.aps.org/prb/abstract/10.1103/PhysRevB.89.184516
  23. Non-equilibrium Dirac carrier dynamics in graphene investigated with time- and angle-resolved photoemission spectroscopy I. Gierz, S. Link, U. Starke and A. Cavalleri Faraday Discuss. 171, 311 (2014) https://pubs.rsc.org/en/content/articlelanding/2014/FD/C4FD00020J#!divAbstract
  24. Snapshots of non-equilibrium Dirac carrier distributions in graphene I. Gierz, J. C. Petersen, M. Mitrano, C. Cacho, I. C. E. Turcu, E. Springate, A. Stöhr, A. Köhler, U. Starke and A. Cavalleri Nat. Mater. 12, .1119 (2013) www.nature.com/articles/nmat3757
  25. Possible observation of parametrically amplified coherent phasons in K0.3MoO3 using time-resolved extreme-ultraviolet angle-resolved photoemission spectroscopy H. Y. Liu, I. Gierz, J. C. Petersen, S. Kaiser, A. Simoncig, A. L. Cavalieri, C. Cacho, I. C. E. Turcu, E. Springate, F. Frassetto, L. Poletto, S. S. Dhesi, Z.-A. Xu, T. Cuk, R. Merlin, and A. Cavalleri Phys. Rev. B 88, 045104 (2013) journals.aps.org/prb/abstract/10.1103/PhysRevB.88.045104
  26. sp-band tight-binding model for the Bychkov-Rashba effect in a two-dimensional electron system including nearest-neighbor contributions from an electric field C. R. Ast and I. Gierz Phys. Rev. B 86, 085105 (2012) journals.aps.org/prb/abstract/10.1103/PhysRevB.86.085105
  27. Graphene Sublattice Symmetry and Isospin Determined by Circular Dichroism in Angle-Resolved Photoemission Spectroscopy I. Gierz, M. Lindroos, H. Höchst, C. R. Ast, and K. Kern Nano Lett. 12, 3900 (2012) pubs.acs.org/doi/10.1021/nl300512q
  28. Tuning the spin texture in binary and ternary surface alloys on Ag(111) I. Gierz, F. Meier, J. H. Dil, K. Kern, and C. R. Ast Phys. Rev. B 83, 195122 (2012) journals.aps.org/prb/abstract/10.1103/PhysRevB.83.195122
  29. Illuminating the dark corridor in graphene: Polarization dependence of angle-resolved photoemission spectroscopy on graphene I. Gierz, J. Henk, H. Höchst, C. R. Ast, and K. Kern Phys. Rev. B 83, 121408(R) (2011) journals.aps.org/prb/abstract/10.1103/PhysRevB.83.121408
  30. Structural influence on the Rashba-type spin splitting in surface alloys I. Gierz, B. Stadtmüller, J. Vuorinen, M. Lindroos, F. Meier, J. H. Dil, K. Kern, and C. R. Ast Phys. Rev. B 81, 245430 (2010) journals.aps.org/prb/abstract/10.1103/PhysRevB.81.245430
  31. Electronic decoupling of an epitaxial graphene monolayer by gold intercalation I. Gierz, T. Suzuki, R. T. Weitz, D. S. Lee, B. Krauss, C. Riedl, U. Starke, H. Höchst, J. H. Smet, C. R. Ast, and K. Kern Phys. Rev. B 81, 235408 (2010) journals.aps.org/prb/abstract/10.1103/PhysRevB.81.235408
  32. Silicon Surface with Giant Spin Splitting I. Gierz, T. Suzuki, E. Frantzeskakis, S. Pons, S. Ostanin, A. Ernst, J. Henk, M. Grioni, K. Kern, and C. R. Ast Phys. Rev. Lett. 103, 046803 (2009) journals.aps.org/prl/abstract/10.1103/PhysRevLett.103.046803
  33. Assessing the atomic contribution to the Rashba spin-orbit splitting in surface alloys: Sb/Ag(111) L. Moreschini, A. Bendounan, I. Gierz, C. R. Ast, H. Mirhosseini, H. Höchst, K. Kern, J. Henk, A. Ernst, S. Ostanin, F. Reinert, and M. Grioni Phys. Rev. B 79, 075424 (2009) journals.aps.org/prb/abstract/10.1103/PhysRevB.79.075424
  34. Atomic Hole Doping of Graphene I. Gierz, C. Riedl, U. Starke, C. R. Ast, and K. Kern Nano Lett. 8, 4603 (2008) pubs.acs.org/doi/10.1021/nl802996s
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