Magnetoplasmon resonance in two-dimensional fluctuating superconductors

K. Sonowal; V. M. Kovalev; I. G. Savenko

doi:10.1088/1367-2630/ac1ed5

Magnetoplasmon resonance in two-dimensional fluctuating superconductors

K. Sonowal^*, V. M. Kovalev, I. G. Savenko

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	093009
Journal	New Journal of Physics
Volume	23
Issue number	9
DOIs	https://doi.org/10.1088/1367-2630/ac1ed5
State	Published - Sep 2021
Externally published	Yes

Keywords

magnetoplasmons
superconducting fluctuations
transition metal dichalcogenides

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10.1088/1367-2630/ac1ed5

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title = "Magnetoplasmon resonance in two-dimensional fluctuating superconductors",

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.",

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author = "K. Sonowal and Kovalev, {V. M.} and Savenko, {I. G.}",

note = "Publisher Copyright: {\textcopyright} 2021 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft.",

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doi = "10.1088/1367-2630/ac1ed5",

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T1 - Magnetoplasmon resonance in two-dimensional fluctuating superconductors

AU - Sonowal, K.

AU - Kovalev, V. M.

AU - Savenko, I. G.

PY - 2021/9

Y1 - 2021/9

N2 - 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.

AB - 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.

KW - magnetoplasmons

KW - superconducting fluctuations

KW - transition metal dichalcogenides

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U2 - 10.1088/1367-2630/ac1ed5

DO - 10.1088/1367-2630/ac1ed5

M3 - 文章

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SN - 1367-2630

VL - 23

JO - New Journal of Physics

JF - New Journal of Physics

IS - 9

M1 - 093009

ER -

Magnetoplasmon resonance in two-dimensional fluctuating superconductors

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