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arXiv · 2206.04288

Even-odd parity transition in strongly correlated locally noncentrosymmetric superconductors : An application to CeRh$_2$As$_2$

Kosuke Nogaki·Youichi Yanase
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Abstract

The discovery of the multiple $H$-$T$ phase diagram of CeRh$_2$As$_2$ offers a new route to designing topological superconductors. Although weak-coupling theories explain the experimental phase diagram qualitatively, a quantitative discrepancy between them has discouraged conclusive interpretation. In this Letter, we thoroughly study the effect of Coulomb interaction and the phase diagrams of locally noncentrosymmetric superconductors. We reveal even-odd parity transition and the enhancement of the parity transition field in strongly correlated superconductors, and an issue of CeRh$_2$As$_2$ is resolved.

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Kosuke Nogaki, Youichi Yanase. 2022-06-09. Even-odd parity transition in strongly correlated locally noncentrosymmetric superconductors : An application to CeRh$_2$As$_2$. https://doi.org/10.1103/physrevb.106.l100504

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