Emergent rotational symmetry violation
The hexagonal Kagome superconductor CsV3Sb5 exhibits combined six-fold and two-fold in-plane upper critical field anisotropies that persist anomalously close to Tc, indicating a multi-component nematic superconducting order parameter.
Kazumi, Fukushima · Keito, Obata · Soichiro, Yamane · Yajian, Hu · Li, Yongkai · Yao, Yugui · Zhiwei, Wang · Maeno, Yoshiteru · Yonezawa, Shingo
Nature Communications 2024
In-plane upper critical field shows combined six-fold and two-fold anisotropies
Anisotropies remain robust up to very close to Tc