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research article
Giant spin splitting through surface alloying
The long-range ordered surface alloy Bi/Ag(111) is found to exhibit a giant spin splitting of its surface electronic structure due to spin-orbit coupling, as is determined by angle-resolved photoelectron spectroscopy. First-principles electronic structure calculations fully confirm the experimental findings. The effect is brought about by a strong in-plane gradient of the crystal potential in the surface layer, in interplay with the structural asymmetry due to the surface-potential barrier. As a result, the spin polarization of the surface states is considerably rotated out of the surface plane.
Type
research article
Web of Science ID
WOS:000246210200053
Authors
Ast, Christian R.
•
Henk, Juergen
•
Ernst, Arthur
•
•
Falub, Mihaela C.
•
Pacile, Daniela
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Bruno, Patrick
•
Kern, Klaus
•
Publication date
2007
Publisher
Published in
Volume
98
Article Number
186807
Subjects
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
April 1, 2010
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