Fermi surface and band structure of BiPd from ARPES studies

H. Lohani; P. Mishra; Anurag Gupta; V. P. S. Awana; B. R. Sekhar

doi:10.1016/j.physc.2016.12.004

paper

Fermi surface and band structure of BiPd from ARPES studies

arXiv:2310.18800 · doi:10.1016/j.physc.2016.12.004

Abstract

We present a detailed electronic structure study of the non-centrosymmetric superconductor BiPd based on our angle resolved photoemission spectroscopy (ARPES) measurements and Density Functional Theory (DFT) based calculations. We observe a high intensity distribution on the Fermi surface (FS) of this compound resulting from various electron and hole like bands which are present in the vicinity of the Fermi energy (E $_{f}$ ). The near E $_{f}$ states are primarily composed of Bi-6p with a little admixture of Pd-4d $_{x^{2} - y^{2} / z y}$ orbitals. There are various spin-orbit split bands involved in the crossing of E $_{f}$ making a complex FS. The FS mainly consists of multi sheets of three dimensions which disfavor the nesting between different sheets of the FS. Our comprehensive study elucidates that BiPd could be a s-wave multiband superconductor.