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Münster 1997 – scientific programme

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O: Oberflächenphysik

O 22: POSTER II

O 22.29: Poster

Wednesday, March 19, 1997, 14:15–15:45, AULA

Angle resolved photoemission study of the HgTe(110) surface — •N. Orlowski1, C. Janowitz1, A. M"uller1, B.J. Kowalski2, B.A. Orłowski2, and R. Manzke11Institut f"ur Physik, Humboldt Universit"at zu Berlin, Invalidenstr. 110, D-10115 Berlin — 2Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland

Photoemission measurements have been performed on the HgTe(110) surface which was prepared by cleavage. Energy distribution curves in the energy range 8…26 eV have been taken in normal emission according to the ΓΣX direction of the volume Brillouin zone. In addition, EDCs have been measured along the ΓX- and the Γ X-directions of the surface Brillouin zone. Lack of dispersion in normal emission and periodicity with the surface Brillouin zone hint at the existence of surface states. These and experimental bulk band structure will be discussed with respect to theoretical predictions.

Supported by BMBF (project 05 622 KHA).

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