Strongly anisotropic spin and orbital Rashba effect at a tellurium - noble metal interface

Geldiyev B, Ünzelmann M, Eck P, Kißlinger T, Schusser J, Figgemeier T, Kagerer P, Tezak N, Krivenkov M, Varykhalov A, Fedorov A, Nicolaï L, Minár J, Miyamoto K, Okuda T, Shimada K, Di Sante D, Sangiovanni G, Hammer L, Schneider MA, Bentmann H, Reinert F (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Physical Review B American Physical Society

Book Volume: 108

Article Number: L121107

Journal Issue: 12

DOI: 10.1103/PhysRevB.108.L121107

Abstract

We study the interplay of lattice, spin, and orbital degrees of freedom in a two-dimensional model system: a flat square lattice of Formula Presented atoms on a Formula Presented surface. The atomic structure of the Te monolayer is determined by scanning tunneling microscopy and quantitative low-energy electron diffraction. Using spin- and angle-resolved photoelectron spectroscopy and density functional theory, we observe a Te-Au interface state with highly anisotropic Rashba-type spin-orbit splitting at the Formula Presented point of the Brillouin zone. Based on a profound symmetry and tight-binding analysis, we show how in-plane square lattice symmetry and broken inversion symmetry at the Te-Au interface together enforce a remarkably anisotropic orbital Rashba effect which strongly modulates the spin splitting.

Authors with CRIS profile

Tilman Kißlinger Lehrstuhl für Festkörperphysik Lutz Hammer Lehrstuhl für Festkörperphysik Alexander Schneider Professur für Experimentalphysik

Additional Organisation(s)

FAU Profilzentrum Licht.Materie.Quantentechnologien (FAU LMQ)

Involved external institutions

Julius-Maximilians-Universität Würzburg DE Germany (DE) Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) DE Germany (DE) University of West Bohemia (UWB) CZ Czech Republic (CZ) Hiroshima University / 広島大学 JP Japan (JP) University of Bologna / Università di Bologna IT Italy (IT)

How to cite

APA:

Geldiyev, B., Ünzelmann, M., Eck, P., Kißlinger, T., Schusser, J., Figgemeier, T.,... Reinert, F. (2023). Strongly anisotropic spin and orbital Rashba effect at a tellurium - noble metal interface. Physical Review B, 108(12). https://doi.org/10.1103/PhysRevB.108.L121107

MLA:

Geldiyev, B., et al. "Strongly anisotropic spin and orbital Rashba effect at a tellurium - noble metal interface." Physical Review B 108.12 (2023).

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