Floquet engineering Higgs dynamics in time-periodic superconductors

  • Higgs modes emerge in superconductors as collective excitations of the order-parameter amplitude when periodically driven by electromagnetic radiation. In this work, we develop a Floquet approach to study Higgs modes in superconductors under time-periodic driving, where the dynamics of the order parameter is captured by anomalous Floquet Green’s functions. We show that the Floquet description is particularly powerful as it allows one to exploit the time-periodic nature of the driving, thus considerably reducing the complexity of the time-dependent problem. Interestingly, the Floquet approach is also enlightening because it naturally offers a physical explanation for the renormalized steady-state order parameter as a result of photon-assisted transitions between Floquet sidebands. We demonstrate the usefulness of Floquet engineering Higgs modes in time-periodic s-wave superconductors.

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Metadaten
Author:Tobias KuhnGND, Björn Sothmann, Jorge Cayao
URN:urn:nbn:de:bvb:384-opus4-1138276
Frontdoor URLhttps://opus.bibliothek.uni-augsburg.de/opus4/113827
ISSN:2469-9950OPAC
ISSN:2469-9969OPAC
Parent Title (English):Physical Review B
Publisher:American Physical Society (APS)
Type:Article
Language:English
Year of first Publication:2024
Publishing Institution:Universität Augsburg
Release Date:2024/07/03
Volume:109
Issue:13
First Page:134517
DOI:https://doi.org/10.1103/physrevb.109.134517
Institutes:Mathematisch-Naturwissenschaftlich-Technische Fakultät
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik / Professur für Quantencomputing und Quantengeräte
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoCC-BY 4.0: Creative Commons: Namensnennung (mit Print on Demand)