Uniaxial-strain control of nematic superconductivity in Sr_xBi₂Se₃.

ABSTRACT: Nematic states are characterized by rotational symmetry breaking without translational ordering. Recently, nematic superconductivity, in which the superconducting gap spontaneously lifts the rotational symmetry of the lattice, has been discovered. In nematic superconductivity, multiple superconducting domains with different nematic orientations can exist, and these domains can be controlled by a conjugate external stimulus. Domain engineering is quite common in magnets but has not been achieved in superconductors. Here, we report control of the nematic superconductivity and their domains of Sr_xBi₂Se₃, through externally-applied uniaxial stress. The suppression of subdomains indicates that it is the Δ_4y state that is most favoured under compressio

SUBMITTER: Kostylev I 

PROVIDER: S-EPMC7445267 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature