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Microwave response of type-II superconductors at weak pinning

by B. V. Pashinsky, M. V. Feigel'man, A. V. Andreev

This Submission thread is now published as

Submission summary

Authors (as registered SciPost users): Anton Andreev · Mikhail Feigel'man
Submission information
Preprint Link: scipost_202301_00033v1  (pdf)
Date accepted: 2023-02-15
Date submitted: 2023-01-21 17:53
Submitted by: Andreev, Anton
Submitted to: SciPost Physics
Ontological classification
Academic field: Physics
Specialties:
  • Condensed Matter Physics - Theory
Approach: Theoretical

Abstract

Theory of linear microwave response of thin films of type-II superconductors in the mixed state is developed taking into account random spatial fluctuations of the parameters of the system, such as the order parameter, diffusion coefficient, or film thickness. In the regime of collective pinning the microwave response of the system exhibits strong frequency dispersion, arising from nonequilibrium vortex core quasiparticles. The corresponding contribution to the ac conductivity is controlled by the inelastic relaxation time, and may exceed the usual Bardeen-Stephen conductivity. It is caused by the Debye-type inelastic relaxation. Debye mechanism of microwave losses may be responsible for strong effects of electromagnetic noise upon dc conductivity in the mixed state at low temperatures.

Published as SciPost Phys. 14, 096 (2023)



Author comments upon resubmission

Dear Editors,

We thank the Referees for the prompt review of our manuscript.

In response to the Referee comments we made the following changes to the manuscript.

1) In the first paragraph on page 5 we added a discussion of the temperature dependence of the Debye contribution to the resistivity that follows from our results. The strong temperature dependence of the Debye contribution may be used as the experimental signature of the presence of this mechanism, as suggested by the first Referee.

We also discussed the limits of applicability of our results at low temperatures. This addresses the comment of the second Referee.

2) In the second paragraph on page 5 also added a comment on the possible relevance of our results to the recent experiments on superconducting films with large kinetic inductance, and added Refs. [15-19].

List of changes

1) In the first paragraph on page 5 we added a discussion of the temperature dependence of the Debye contribution to the resistivity that follows from our results. The strong temperature dependence of the Debye contribution may be used as the experimental signature of the presence of this mechanism, as suggested by the first Referee.

We also discussed the limits of applicability of our results at low temperatures. This addresses the comment of the second Referee.

2) In the second paragraph on page 5 also added a comment on the possible relevance of our results to the recent experiments on superconducting films with large kinetic inductance, and added Refs. [15-19].

Submission & Refereeing History

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Resubmission scipost_202301_00033v1 on 21 January 2023

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