Unzelmann M, Bentmann H, Eck P, Kißlinger T, Geldiyev B, Rieger J, Moser S, Vidal RC, Kissner K, Hammer L, Schneider MA, Fauster T, Sangiovanni G, Di Sante D, Reinert F (2020)
Publication Type: Journal article
Publication year: 2020
Book Volume: 124
Article Number: 176401
DOI: 10.1103/PhysRevLett.124.176401
The Rashba effect is fundamental to the physics of two-dimensional electron systems and underlies a variety of spintronic phenomena. It has been proposed that the formation of Rashba-type spin splittings originates microscopically from the existence of orbital angular momentum (OAM) in the Bloch wave functions. Here, we present detailed experimental evidence for this OAM-based origin of the Rashba effect by angle-resolved photoemission (ARPES) and two-photon photoemission experiments for a monolayer AgTe on Ag(111). Using quantitative low-energy electron diffraction analysis, we determine the structural parameters and the stacking of the honeycomb overlayer with picometer precision. Based on an orbitalsymmetry analysis in ARPES and supported by first-principles calculations, we unequivocally relate the presence and absence of Rashba-type spin splittings in different bands of AgTe to the existence of OAM.
APA:
Unzelmann, M., Bentmann, H., Eck, P., Kißlinger, T., Geldiyev, B., Rieger, J.,... Reinert, F. (2020). Orbital-Driven Rashba Effect in a Binary Honeycomb Monolayer AgTe. Physical Review Letters, 124. https://doi.org/10.1103/PhysRevLett.124.176401
MLA:
Unzelmann, Maximilian, et al. "Orbital-Driven Rashba Effect in a Binary Honeycomb Monolayer AgTe." Physical Review Letters 124 (2020).
BibTeX: Download