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Junk, Vanessa ; Reck, Phillipp ; Gorini, Cosimo ; Richter, Klaus

Floquet oscillations in periodically driven Dirac systems

Junk, Vanessa , Reck, Phillipp , Gorini, Cosimo und Richter, Klaus (2019) Floquet oscillations in periodically driven Dirac systems. arXiv.org. (Eingereicht)

Veröffentlichungsdatum dieses Volltextes: 12 Jun 2019 11:04
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.40334

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Zusammenfassung

Electrons in a lattice exhibit time-periodic motion, known as Bloch oscillation, when subject to an additional static electric field. Here we show that a corresponding dynamics can occur upon replacing the spatially periodic potential by a time-periodic driving: Floquet oscillations of charge carriers in a spatially homogeneous system. The time lattice of the driving gives rise to Floquet bands ...

Electrons in a lattice exhibit time-periodic motion, known as Bloch oscillation, when subject to an additional static electric field. Here we show that a corresponding dynamics can occur upon replacing the spatially periodic potential by a time-periodic driving: Floquet oscillations of charge carriers in a spatially homogeneous system. The time lattice of the driving gives rise to Floquet bands that, for systems with linear dispersion, take on the role of the usual Bloch bands. For two cases, harmonic driving and periodic kicking through pulses, we numerically demonstrate the existence of such oscillations, both by directly propagating wave packets and based on a complementary Floquet analysis. The Floquet oscillations feature richer oscillation patterns than their Bloch counterpart and enable the imaging of Floquet bands. Moreover, their period can be directly tuned through the driving frequency. Such oscillations should be experimentally observable in effective Dirac systems, such as graphene, when illuminated with circularly polarized light.



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Details

DokumentenartArtikel
Titel eines Journals oder einer ZeitschriftarXiv.org
Verlag:arXiv.org
Datum11 Juni 2019
InstitutionenPhysik > Institut für Theoretische Physik > Lehrstuhl Professor Richter > Arbeitsgruppe Klaus Richter
Identifikationsnummer
WertTyp
1906.04446arXiv-ID
Stichwörter / KeywordsFloquet, Bloch, Floquet-Bloch oscillations, time periodic systems
Dewey-Dezimal-Klassifikation500 Naturwissenschaften und Mathematik > 530 Physik
StatusEingereicht
BegutachtetNein, diese Version wurde noch nicht begutachtet (bei preprints)
An der Universität Regensburg entstandenJa
URN der UB Regensburgurn:nbn:de:bvb:355-epub-403348
Dokumenten-ID40334

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