Discontinuous Transition to Superconducting Phase

Fuente: arXiv
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Main Authors: Sato, Takumi, Kobayashi, Shingo, Asano, Yasuhiro
Format: Preprint
Published: 2023
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author Sato, Takumi
Kobayashi, Shingo
Asano, Yasuhiro
author_facet Sato, Takumi
Kobayashi, Shingo
Asano, Yasuhiro
contents We discuss the instability of uniform superconducting states that contain the pairing correlations belonging to the odd-frequency symmetry class. The instability originates from the paramagnetic response of odd-frequency Cooper pairs and is considerable at finite temperatures. As a result, the pair potential varies discontinuously at the transition temperature when the amplitude of the odd-frequency pairing correlation functions is sufficiently large. The discontinuous transition to the superconducting phase is a general feature of superconductors that include odd-frequency Cooper pairs.
format Preprint
id arxiv_https___arxiv_org_abs_2308_02211
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Discontinuous Transition to Superconducting Phase
Sato, Takumi
Kobayashi, Shingo
Asano, Yasuhiro
Superconductivity
We discuss the instability of uniform superconducting states that contain the pairing correlations belonging to the odd-frequency symmetry class. The instability originates from the paramagnetic response of odd-frequency Cooper pairs and is considerable at finite temperatures. As a result, the pair potential varies discontinuously at the transition temperature when the amplitude of the odd-frequency pairing correlation functions is sufficiently large. The discontinuous transition to the superconducting phase is a general feature of superconductors that include odd-frequency Cooper pairs.
title Discontinuous Transition to Superconducting Phase
topic Superconductivity
url https://arxiv.org/abs/2308.02211