Reentrant Superconductivity from Competing Spin-Triplet Instabilities

Fuente: arXiv
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Auteur principal: Goryo, Jun
Format: Preprint
Publié: 2025
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_version_ 1866910223027929088
author Goryo, Jun
author_facet Goryo, Jun
contents Reentrant superconductivity in strong magnetic fields challenges the conventional expectation that magnetic fields necessarily suppress superconductivity. We show that reentrant superconducting instability can arise from the competition between spin-unpolarized and spin-polarized superconducting channels. Using a minimal Ginzburg--Landau theory with two coupled spin-triplet order parameters, we demonstrate that a magnetic field can reorganize the hierarchy of superconducting instabilities, yielding a characteristic reentrant instability curve over a broad parameter range.
format Preprint
id arxiv_https___arxiv_org_abs_2512_23954
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Reentrant Superconductivity from Competing Spin-Triplet Instabilities
Goryo, Jun
Superconductivity
Reentrant superconductivity in strong magnetic fields challenges the conventional expectation that magnetic fields necessarily suppress superconductivity. We show that reentrant superconducting instability can arise from the competition between spin-unpolarized and spin-polarized superconducting channels. Using a minimal Ginzburg--Landau theory with two coupled spin-triplet order parameters, we demonstrate that a magnetic field can reorganize the hierarchy of superconducting instabilities, yielding a characteristic reentrant instability curve over a broad parameter range.
title Reentrant Superconductivity from Competing Spin-Triplet Instabilities
topic Superconductivity
url https://arxiv.org/abs/2512.23954