Evidence for large Rashba splitting in PtPb4 from Angle-Resolved Photoemission Spectroscopy

Abstract

We studied the electronic structure of PtPb${}_4$ using laser angle-resolved photoemission spectroscopy(ARPES) and density functional theory(DFT) calculations. This material is closely related to PtSn${}_4$, which exhibits exotic topological properties such as Dirac node arcs. Fermi surface(FS) of PtPb${}_4$ consists of two electron pockets at the center of the Brillouin zone(BZ) and several hole pockets around the zone boundaries. Our ARPES data reveals significant Rashba splitting at the $\Gamma$ point in agreement with DFT calculations. The presence of Rashba splitting may render this material of potential interest for spintronic applications.

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Cited by in corpus (5)

• Nonsymmorphic Symmetry-Protected Band Crossings in a Square-Net Metal PtPb${}_4$
• Superconductivity in PtPb${}_4$ with Possible Nontrivial Band Topology
• Linear Magnetoresistance and Type-I Superconductivity in $\beta$-IrSn${}_4$
• Superconducting density of states of PtPb4
• Intrinsic defect intolerance in the ultra-pure metal PtSn${}_4$