Termination dependence of the surface states in Pb${}_2$Pd

Abstract

Topological properties of systems lead to the emergence of surface states which can be observed experimentally within the angle-resolved photoemission spectroscopy (ARPES) measurements. Recently, the topological properties of Pb${}_2$Pd were reported. In this paper, we discuss the role of the surface termination on the realized surface states. We discuss the termination dependence of the surface state for (001) and (110) surface. We demonstrate that the Pd terminated (001) surface allow realization of the Dirac cone-like surface state. In the case (110) we observe well visible surface states with parabolic-like dispersion relation in close vicinity of the Fermi level.

6 pages, 5 figures

References in corpus (7)

• Discovery (theoretical prediction and experimental observation) of a large-gap topological-insulator class with spin-polarized single-Dirac-cone on the surface
• Unexpected Dirac-Node Arc in the Topological Line-Node Semimetal HfSiS
• Dirac Line-nodes and Effect of Spin-orbit Coupling in Non-symmorphic Critical Semimetal MSiS (M=Hf, Zr)
• Type-I superconductivity in PdTe${}_2$ probed by $\mu$SR
• An investigation of type-I superconductivity in single crystal of Pb2Pd
• Superconducting density of states and bandstructure at the surface of the candidate topological superconductor Au2Pb
• Bulk superconductivity and non-trivial band topology analysis of Pb2Pd