Structure and oscillatory multilayer relaxation of the bismuth (100) surface

Sun, J.; Wang, J.; Pohl, K.; Chulkov, E. V.; Hofmann, Ph.; Bihlmayer, G.; Wells, J.; Koroteev, Y. M.

doi:10.1088/1367-2630/12/6/063016

Journal Article

Structure and oscillatory multilayer relaxation of the bismuth (100) surface

Sun, J. ; Wang, J. ; Wells, J. ; Koroteev, Y. M. ; Bihlmayer, G.FZJ* ; Chulkov, E. V. ; Hofmann, P. ; Pohl, K.

2010
Dt. Physikalische Ges. [Bad Honnef]

New journal of physics 12, (2010) [10.1088/1367-2630/12/6/063016]

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Please use a persistent id in citations: http://hdl.handle.net/2128/28977 doi:10.1088/1367-2630/12/6/063016

Abstract: We present a combined experimental and theoretical study of the surface structure of single crystal Bi(100) via scanning tunneling microscopy (STM), low-energy electron diffraction intensity versus energy (LEED-IV) analysis and density functional theory (DFT). We find that the surface is unreconstructed and shows an unusually large oscillatory multilayer relaxation down to the sixth layer. This unexpected behavior will be explained by a novel mechanism related to the deeply penetrating electronic surface states. STM reveals wide (100) terraces, which are separated by two-layer high steps in which the shorter of the two interlayer spacings is terminating this surface, consistent with the LEED structural analysis and DFT.

Keyword(s): J

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Physics, Multidisciplinary

Note: We acknowledge valuable discussions with Professor Wolfgang Moritz and technical help from Dr Bogdan Diaconescu. This work was supported by the American National Science Foundation DMR-0134933 and the Petroleum Research Fund under grant no. 46323-AC5, the Danish National Science Foundation, the Basque Country Government and the University of the Basque Country.

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