Evidence against a charge density wave on Bi(111) [electronic resource].
- Berkeley, Calif. : Lawrence Berkeley National Laboratory, 2005. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Additional Creators:
- Lawrence Berkeley National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- The Bi(111) surface was studied by scanning tunneling microscopy (STM), transmission electron microscopy (TEM) and angle-resolved photoemission (ARPES) in order to verify the existence of a recently proposed surface charge density wave (CDW) [Ch. R. Ast and H. Hoechst Phys. Rev. Lett. 90, 016403 (2003)]. The STM and TEM results to not support a CDW scenario at low temperatures. Furthermore, the quasiparticle interference pattern observed in STM confirms the spin-orbit split character of the surface states which prevents the formation of a CDW, even in the case of good nesting. The dispersion of the electronic states observed with ARPES agrees well with earlier findings. In particular, the Fermi contour of the electron pocket at the centre of the surface Brillouin zone is found to have a hexagonal shape. However, no gap opening or other signatures of a CDW phase transition can be found in the temperature-dependent data.
- Published through SciTech Connect., 05/01/2005., "lbnl--58279", ": KP1102010", Physics Review B 72 8 FT, Schwartz, A.J.; Pascual, J.I.; Wells, J.; Moore,K.T.; Downing, K.H.; Li, Z.; Kim, T.K.; Tichelaar, F.D.; Spence, J.C.H.; He, H.; Hoffmann, S.V.; Knupfer, M.; Borisenko, S.V.; Gayone, J.E.; Lazar, S.; Kirkegaard, C.; Haberle, P.; Hofmann, Ph.; Fernancez-Torrente, I., Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US), and DanishNational Science Foundation
- Funding Information:
- DE-AC02-05CH11231 and 441S01
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