Strong rashba-type spin polarization of the photocurrent from bulk continuum States: experiment and theory for Bi(111)

Strong spin polarization of the photocurrent from bulk continuum states of Bi(111) is experimentally observed. On the basis of ab initio one-step photoemission theory the effect is shown to originate from the strong polarization of the initial states at the surface and to be the result of the surfac...

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Bibliographic Details
Published in:Physical review letters 2010-08, Vol.105 (7), p.076804-076804, Article 076804
Main Authors: Kimura, A, Krasovskii, E E, Nishimura, R, Miyamoto, K, Kadono, T, Kanomaru, K, Chulkov, E V, Bihlmayer, G, Shimada, K, Namatame, H, Taniguchi, M
Format: Article
Language:English
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Summary:Strong spin polarization of the photocurrent from bulk continuum states of Bi(111) is experimentally observed. On the basis of ab initio one-step photoemission theory the effect is shown to originate from the strong polarization of the initial states at the surface and to be the result of the surface sensitivity of photoemission. Final state effects cause deviations of the k{∥} dependence of polarization from strictly antisymmetric relative to Γ.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.105.076804