Nematic superconductivity in topological semimetal CaSn$_{3}$

16 Jan 2019 Siddiquee K A M Hasan Munir Riffat Dissanayake Charuni Vaidya Priyanka Nickle Cameron Del Barco Enrique VanGennep Derrick Hamlin James Nakajima Yasuyuki

We report a detailed study of upper critical field in superconducting topological semimetal CaSn$_{3}$ with the AuCu$_{3}$-type cubic structure (point group: $O_{h}$). We find that the anisotropy of the upper critical field shows two-fold symmetry about a $C_{4}$ axis, breaking the rotational symmetry of the underlying crystal lattice... (read more)

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