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Published on: June 28, 2018
Evolution of the topologically protected surface states in superconductor β-Bi2Pd from the three-dimensional to the
B T Wang1,2,3, Elena R Margine1
1Department of Physics, Applied Physics and Astronomy, Binghamton University-SUNY, Binghamton, NY 13902, United States of America.
Abstract:
The recent discovery of topologically protected surface states in the noncentrosymmetric α-BiPd and the centrosymmetric β-[Formula: see text]Pd has renewed the interest in the Bi-Pd family of superconductors. We employ first-principles calculations to investigate the electronic structure and topological features of β-[Formula: see text]Pd, in bulk and in thin films of various thicknesses. We find that films of nine or more triple layers could harbor topological surface states with Dirac- and Rashba-like band dispersion.
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