Non-symmorphic symmetry and field-driven odd-parity pairing in CeRh$_2$As$_2$

D. C. Cavanagh; T. Shishidou; M. Weinert; P. M. R. Brydon; D. F. Agterberg

doi:10.1103/PhysRevB.105.L020505

paper

Non-symmorphic symmetry and field-driven odd-parity pairing in CeRh $_{2}$ As $_{2}$

arXiv:2106.02698 · doi:10.1103/PhysRevB.105.L020505

Abstract

Recently, evidence has emerged for a field-induced even- to odd-parity superconducting phase transition in CeRh $_{2}$ As $_{2}$ [S. Khim et al., Science 373 1012 (2021)]. Here we argue that the P4/nmm non-symmorphic crystal structure of CeRh $_{2}$ As $_{2}$ plays a key role in enabling this transition by ensuring large spin-orbit interactions near the Brillouin zone boundaries, which naturally leads to the required near-degeneracy of the even- and odd-parity channels. We further comment on the relevance of our theory to FeSe, which crystallizes in the same structure.

9 pages, 9 figures

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Field-induced superconductivity mediated by odd-parity multipole fluctuation
The phase diagram of CeRh $_{2}$ As $_{2}$ for out-of-plane magnetic field
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Diversified Ruderman-Kittel-Kasuya-Yosida Interactions in a Nonsymmorphic Crystal
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Multipolar fluctuations from localized 4f electrons in CeRh2As2
Quasiclassical theory of vortex states in locally non-centrosymmetric superconductors: application to CeRh $_{2}$ As $_{2}$

Non-symmorphic symmetry and field-driven odd-parity pairing in CeRh2​As2​

Abstract

References in corpus (13)

Cited by in corpus (44)

Non-symmorphic symmetry and field-driven odd-parity pairing in CeRh $_{2}$ As $_{2}$