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research article
Anisotropic spin gaps in BiAg2-Ag/Si(111)
2012
We present a detailed analysis of the band structure of the root 3 x root 3 R 30 degrees BiAg2/Ag/Si(111) trilayer system by means of high resolution Angle Resolved Photoemission Spectroscopy (ARPES). BiAg2/Ag/Si(111) exhibits a complex spin-polarized electronic structure due to giant spin-orbit interactions. We show that a complete set of constant energy ARPES maps, supplemented by a modified nearly free electron calculation, provides a unique insight into the structure of the spin-polarized bands and spin gaps. We also show that the complex gap structure can be continuously tuned in energy by a controlled deposition of an alkali metal.
Type
research article
Web of Science ID
WOS:000300238900010
Publication date
2012
Published in
Volume
85
Issue
7
Article Number
075411
Subjects
Peer reviewed
REVIEWED
Available on Infoscience
March 15, 2012
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