This title appears in the Scientific Report : 2011 

Anisotropic scattering of surface state electrons at a point defect on Bi(111)
Cottin, M. C.
Bobisch, C. A. / Schaffert, J. / Jnawali, G. / Sonntag, A. / Bihlmayer, G. / Möller, R.
Quanten-Theorie der Materialien; PGI-1
Quanten-Theorie der Materialien; IAS-1
Applied physics letters, 98 (2011) S. 022108
Melville, NY American Institute of Physics 2011
Journal Article
Grundlagen für zukünftige Informationstechnologien
Applied Physics Letters 98
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Published under German "Allianz" Licensing conditions on 2011-01-14. Available in OpenAccess from 2011-01-14
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Scanning tunneling microscopy was applied to study the lateral variation of the local density of electronic states on the Bi(111) surface in the vicinity of a point defect. At an energy close to the Fermi level a characteristic pattern with a threefold symmetry is found. The pattern can be attributed to the scattering between two electronic surface states which are split by spin orbit coupling. The observation is well described by the superposition of three monochromatic waves. The phase of the waves relative to the center of the defect leads to a reduction to a threefold symmetry. (C) 2011 American Institute of Physics. [doi:10.1063/1.3536528]