Anisotropic scattering of surface state electrons at a point defect on Bi(111)

Cottin, M. C.; Bobisch, C. A.; Schaffert, J.; Bihlmayer, G.; Möller, R.; Jnawali, G.; Sonntag, A.

doi:10.1063/1.3536528

Journal Article

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.FZJ* ; Möller, R.

2011
American Institute of Physics Melville, NY

Applied physics letters 98, 022108 (2011) [10.1063/1.3536528]

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Please use a persistent id in citations: http://hdl.handle.net/2128/7275 doi:10.1063/1.3536528

Abstract: 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]

Keyword(s): J

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Physics, Applied

Note: We thank M. Horn-von Hoegen for fruitful discussions. Financial support is granted by the Deutsche Forschungsgemeinschaft (SFB 616) "Energy Dissipation at Surfaces." M. C. C. and A. S. thank the Studienstiftung des Deutschen Volkes for support.

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