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Survival of Floquet–Bloch States in the Presence of Scattering

MPS-Authors
/persons/resource/persons180731

Aeschlimann,  S.
Institute for Experimental and Applied Physics, University of Regensburg;
Ultrafast Electron Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science;

/persons/resource/persons222317

Sato,  S.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science;
Center for Computational Sciences, University of Tsukuba;

/persons/resource/persons202145

Krause,  R.
Institute for Experimental and Applied Physics, University of Regensburg;
Ultrafast Electron Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science;

/persons/resource/persons180733

Chavez Cervantes,  M.
Ultrafast Electron Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science;

/persons/resource/persons221949

de Giovannini,  U.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science;
Nano-Bio Spectroscopy Group, Departamento de Fisica de Materiales, Universidad del País Vasco UPV/EHU;

/persons/resource/persons221951

Hübener,  H.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science;

/persons/resource/persons261946

Hanff,  K.
Extreme Timescales, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science;
Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel;

/persons/resource/persons22028

Rubio,  A.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science;
Nano-Bio Spectroscopy Group, Departamento de Fisica de Materiales, Universidad del País Vasco UPV/EHU;
Center for Computational Quantum Physics (CCQ), The Flatiron Institute;

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Fulltext (public)

acs.nanolett.1c00801.pdf
(Publisher version), 5MB

Supplementary Material (public)

nl1c00801_si_001.pdf
(Supplementary material), 162KB

Citation

Aeschlimann, S., Sato, S., Krause, R., Chavez Cervantes, M., de Giovannini, U., Hübener, H., et al. (2021). Survival of Floquet–Bloch States in the Presence of Scattering. Nano Letters, 21(12), 5028-5035. doi:10.1021/acs.nanolett.1c00801.


Cite as: https://hdl.handle.net/21.11116/0000-0008-A5AA-E
Abstract
Floquet theory has spawned many exciting possibilities for electronic structure control with light, with enormous potential for future applications. The experimental demonstration in solids, however, remains largely unrealized. In particular, the influence of scattering on the formation of Floquet–Bloch states remains poorly understood. Here we combine time- and angle-resolved photoemission spectroscopy with time-dependent density functional theory and a two-level model with relaxation to investigate the survival of Floquet–Bloch states in the presence of scattering. We find that Floquet–Bloch states will be destroyed if scattering—activated by electronic excitations—prevents the Bloch electrons from following the driving field coherently. The two-level model also shows that Floquet–Bloch states reappear at high field intensities where energy exchange with the driving field dominates over energy dissipation to the bath. Our results clearly indicate the importance of long scattering times combined with strong driving fields for the successful realization of various Floquet phenomena.