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 negates the possibility of a topological superconducting behaviour on the surface. Our direct experimental observation of spin-polarized surface states in BiPd provides critical information that will guide the future search for topological superconductivity in noncentrosymmetric materials.
Publication Date
1-1-2016
Publication Title
Nature Communications
Volume
7
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1038/ncomms13315
Copyright Status
Unknown
Socpus ID
85034704178 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/85034704178
STARS Citation
Neupane, Madhab; Alidoust, Nasser; Hosen, M. Mofazzel; Zhu, Jian Xin; and Dimitri, Klauss, "Observation Of The Spin-Polarized Surface State In A Noncentrosymmetric Superconductor Bipd" (2016). Scopus Export 2015-2019. 2442.
https://stars.library.ucf.edu/scopus2015/2442