Evidence against a charge density wave on Bi(111)
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.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Science. Office of Biological andEnvironmental Research, Lawrence Livermore National Laboratory; DanishNational Science Foundation
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 860980
- Report Number(s):
- LBNL-58279; R&D Project: 441S01; BnR: KP1102010; TRN: US200601%%562
- Journal Information:
- Physics Review B, Vol. 72, Issue 8; Related Information: Journal Publication Date: 08/2005
- Country of Publication:
- United States
- Language:
- English
Topological surface states protected from backscattering by chiral spin texture
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journal | August 2009 |
Coexistence of the topological state and a two-dimensional electron gas on the surface of Bi2Se3
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journal | November 2010 |
Robust surface state transport in thin bismuth nanoribbons
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journal | November 2014 |
Doping-induced topological phase transition in Bi: The role of quantum electronic stress
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journal | January 2020 |
Topological Surface States Protected From Backscattering by Chiral Spin Texture | text | January 2009 |
Quantum Spin Hall Effect and Enhanced Magnetic Response by Spin-Orbit Coupling | text | January 2006 |
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