We study the interplay of lattice, spin, and orbital degrees of freedom in a two-dimensional model system: a flat square lattice of Te atoms on a Au(100) 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 ¯¯¯X 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.
%0 Journal Article
%1 PhysRevB.108.L121107
%A Geldiyev, B.
%A Ünzelmann, M.
%A Eck, P.
%A Kißlinger, T.
%A Schusser, J.
%A Figgemeier, T.
%A Kagerer, P.
%A Tezak, N.
%A Krivenkov, M.
%A Varykhalov, A.
%A Fedorov, A.
%A Nicolai, L.
%A Minár, J.
%A Miyamoto, K.
%A Okuda, T.
%A Shimada, K.
%A Di Sante, D.
%A Sangiovanni, G.
%A Hammer, L.
%A Schneider, M. A.
%A Bentmann, H.
%A Reinert, F.
%D 2023
%I American Physical Society
%J Phys. Rev. B
%K a
%N 12
%P L121107
%R 10.1103/PhysRevB.108.L121107
%T Strongly anisotropic spin and orbital Rashba effect at a tellurium -- noble metal interface
%U https://link.aps.org/doi/10.1103/PhysRevB.108.L121107
%V 108
%X We study the interplay of lattice, spin, and orbital degrees of freedom in a two-dimensional model system: a flat square lattice of Te atoms on a Au(100) 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 ¯¯¯X 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.
@article{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 Te atoms on a Au(100) 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 ¯¯¯X 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.},
added-at = {2023-10-20T16:33:24.000+0200},
author = {Geldiyev, B. and Ünzelmann, M. and Eck, P. and Kißlinger, T. and Schusser, J. and Figgemeier, T. and Kagerer, P. and Tezak, N. and Krivenkov, M. and Varykhalov, A. and Fedorov, A. and Nicolai, L. and Minár, J. and Miyamoto, K. and Okuda, T. and Shimada, K. and Di Sante, D. and Sangiovanni, G. and Hammer, L. and Schneider, M. A. and Bentmann, H. and Reinert, F.},
biburl = {https://www.bibsonomy.org/bibtex/26dd6a124c3fbeb0c13be3397d7db2428/ctqmat},
day = 14,
doi = {10.1103/PhysRevB.108.L121107},
interhash = {bbd869892db5019344de90564e583bd1},
intrahash = {6dd6a124c3fbeb0c13be3397d7db2428},
journal = {Phys. Rev. B},
keywords = {a},
month = {09},
number = 12,
numpages = {7},
pages = {L121107},
publisher = {American Physical Society},
timestamp = {2023-10-31T11:03:10.000+0100},
title = {Strongly anisotropic spin and orbital Rashba effect at a tellurium -- noble metal interface},
url = {https://link.aps.org/doi/10.1103/PhysRevB.108.L121107},
volume = 108,
year = 2023
}