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Magnetoplasmon resonance in two-dimensional fluctuating superconductors

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Title
Magnetoplasmon resonance in two-dimensional fluctuating superconductors
Author(s)
K Sonowal; Kovalev, V. M.; I G Savenko
Publication Date
2021-09-01
Journal
NEW JOURNAL OF PHYSICS, v.23, no.9
Publisher
IOP PUBLISHING LTD
Abstract
We develop a theory of the magnetoplasmon resonance (MPR) in two-dimensional superconductors in the fluctuating regime, where the temperature is slightly above the critical temperature of the superconducting transition. In this regime, unpaired electrons and fluctuating Cooper pairs coexist in the system and interact with each other via long-range Coulomb forces, forming a Bose-Fermi mixture. The sample is considered to be under the influence of an external time-dependent electromagnetic field with a frequency in sub-terahertz range and a permanent magnetic field. It is shown that the MPR of the system is strongly modified in the presence of superconducting fluctuations in the vicinity of the superconducting transition. In particular, the fluctuating Cooper pairs dramatically change the broadening of the MPR, which is reflected in the optical response of the system.
URI
https://pr.ibs.re.kr/handle/8788114/10359
DOI
10.1088/1367-2630/ac1ed5
ISSN
1367-2630
Appears in Collections:
Center for Theoretical Physics of Complex Systems(복잡계 이론물리 연구단) > 1. Journal Papers (저널논문)
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