Origin of Spin-Orbit Splitting for Monolayers of Au and Ag on W(110) and Mo(110)
2008; American Physical Society; Volume: 100; Issue: 5 Linguagem: Inglês
10.1103/physrevlett.100.057601
ISSN1092-0145
AutoresA. M. Shikin, A. Varykhalov, G. V. Prudnikova, Dmitry Yu. Usachov, V. K. Adamchuk, Yoichi Yamada, J.D. Riley, O. Rader,
Tópico(s)Quantum and electron transport phenomena
ResumoSpin-orbit coupling can give rise to spin-split electronic states without a ferromagnet or an external magnetic field. We create large spin-orbit splittings in a Au and Ag monolayer on W(110) and show that the size of the splitting does not depend on the atomic number of the Au or Ag overlayer but of the W substrate. Spin- and angle-resolved photoemission and Fermi-surface scans reveal that the overlayer states acquire spin polarization through spin-dependent overlayer-substrate hybridization.
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