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Título

Topology of spin polarization of the 5d states on W(110) and Al/W(110) surfaces

AutorRybkin, Artem G.; Krasovskii, E. E.; Marchenko, Dmitry; Chulkov, Eugene V. CSIC ORCID; Varykhalov, A. Yu.; Rader, Oliver; Shikin, Alexander M.
Fecha de publicación2012
EditorAmerican Physical Society
CitaciónPhysical Review B 86: 035117 (2012)
ResumenThe spin polarization of W(110) and Al/W(110) surfaces is studied by spin- and angle-resolved photoemission. On both surfaces distinct E(k) dispersions are identified with an unusual topology: A single spectral branch is spin polarized antisymmetrically relative to the Γ̄ point, and two spin-polarized branches cross at Γ̄. The crossing branches disperse linearly but this similarity to a Dirac cone is lost after deposition of the Al, where they acquire a parabolic dispersion. Based on ab initio one-step photoemission theory, we show that the measured spin polarization is a property of the ground state and identify the effect as the counterpart of the recently discovered Rashba polarization of bulk states at the surface, but with a distinct non-Rashba topology. © 2012 American Physical Society.
Versión del editorhttp://dx.doi.org/10.1103/PhysRevB.86.035117
URIhttp://hdl.handle.net/10261/102045
DOI10.1103/PhysRevB.86.035117
Identificadoresdoi: 10.1103/PhysRevB.86.035117
issn: 1098-0121
e-issn: 1550-235X
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