Observation of the spin-polarized surface state in a noncentrosymmetric superconductor BiPd.

ABSTRACT: Recently, noncentrosymmetric superconductor BiPd has attracted considerable research interest due to the possibility of hosting topological superconductivity. Here we report a systematic high-resolution angle-resolved photoemission spectroscopy (ARPES) and spin-resolved ARPES study of the normal state electronic and spin properties of BiPd. Our experimental results show the presence of a surface state at higher-binding energy with the location of Dirac point at around 700 meV below the Fermi level. The detailed photon energy, temperature-dependent and spin-resolved ARPES measurements complemented by our first-principles calculations demonstrate the existence of the spin-polarized surface states at high-binding energy. The absence of such spin-polarized surface states near the Fermi level n

SUBMITTER: Neupane M 

PROVIDER: S-EPMC5103058 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature