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Correct Brillouin zone and electronic structure of BiPd

Research output: Contribution to journalArticle

Author(s)

Alexander Yaresko, Andreas P. Schnyder, Hadj M. Benia, Chi-Ming Yim, Giorgio Levy, Andrea Damascelli, Christian R. Ast, Darren C. Peets, Peter Wahl

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Abstract

A promising route to the realization of Majorana fermions is in noncentrosymmetric superconductors, in which spin-orbit coupling lifts the spin degeneracy of both bulk and surface bands. A detailed assessment of the electronic structure is critical to evaluate their suitability for this through establishing the topological properties of the electronic structure. This requires correct identification of the time-reversal-invariant momenta. One such material is BiPd, a recently rediscovered noncentrosymmetric superconductor which can be grown in large, high-quality single crystals and has been studied by several groups using angular resolved photoemission to establish its surface electronic structure. Many of the published electronic structure studies on this material are based on a reciprocal unit cell which is not the actual Brillouin zone of the material. We show here the consequences of this for the electronic structures and show how the inferred topological nature of the material is affected.
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Details

Original languageEnglish
Article number075108
Number of pages5
JournalPhysical Review. B, Condensed matter and materials physics
Volume97
Issue number7
Early online date5 Feb 2018
DOIs
Publication statusPublished - 15 Feb 2018

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