Superconductivity beyond the Conventional Pauli Limit in High-Pressure CeSb2

Oliver P. Squire; Stephen A. Hodgson; Jiasheng Chen; Vitaly Fedoseev; Christian K. de Podesta; Theodore I. Weinberger; Patricia L. Alireza; F. Malte Grosche

doi:10.1103/PhysRevLett.131.026001

Superconductivity beyond the Conventional Pauli Limit in High-Pressure CeSb₂

Oliver P. Squire
, Stephen A. Hodgson
, Jiasheng Chen
, Vitaly Fedoseev
, Christian K. de Podesta
, Theodore I. Weinberger
, Patricia L. Alireza
, F. Malte Grosche^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

18 Citations (Scopus)

2 Downloads (CityUHK Scholars)

Abstract

We report the discovery of superconductivity at a pressure-induced magnetic quantum phase transition in the Kondo lattice system CeSb₂, sustained up to magnetic fields that exceed the conventional Pauli limit eightfold. Like CeRh2As₂, CeSb₂ is locally noncentrosymmetric around the Ce site, but the evolution of critical fields and normal state properties as CeSb2 is tuned through the quantum phase transition motivates a fundamentally different explanation for its resilience to applied field.

Original language	English
Article number	026001
Number of pages	6
Journal	Physical Review Letters
Volume	131
Issue number	2
Online published	10 Jul 2023
DOIs	https://doi.org/10.1103/PhysRevLett.131.026001
Publication status	Published - 14 Jul 2023
Externally published	Yes

Funding

The project was supported by the EPSRC of the UK (Grants No. EP/K012894 and No. EP/P023290/1) and by Trinity College.

Publisher's Copyright Statement

This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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AU - Chen, Jiasheng

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AU - de Podesta, Christian K.

AU - Weinberger, Theodore I.

AU - Alireza, Patricia L.

AU - Grosche, F. Malte

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