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arXiv · 2308.02211

Discontinuous Transition to Superconducting Phase

Takumi Sato·Shingo Kobayashi·Yasuhiro Asano
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Abstract

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.

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Takumi Sato, Shingo Kobayashi, Yasuhiro Asano. 2023-08-04. Discontinuous Transition to Superconducting Phase. https://doi.org/10.1103/physrevb.110.144503

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