Evidence against a charge density wave on Bi(111)

T. K. Kim; J. Wells; C. Kirkegaard; Z. Li; S. V. Hoffmann; J. E. Gayone; I. Fernandez-Torrente; P. Häberle; J. I. Pascual; K. T. Moore; A. J. Schwartz; H. He; John Spence; K. H. Downing; S. Lazar; F. D. Tichelaar; S. V. Borisenko; M. Knupfer; Ph Hofmann

doi:10.1103/PhysRevB.72.085440

Evidence against a charge density wave on Bi(111)

T. K. Kim, J. Wells, C. Kirkegaard, Z. Li, S. V. Hoffmann, J. E. Gayone, I. Fernandez-Torrente, P. Häberle, J. I. Pascual, K. T. Moore, A. J. Schwartz, H. He, John Spence, K. H. Downing, S. Lazar, F. D. Tichelaar, S. V. Borisenko, M. Knupfer, Ph Hofmann

Physics

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33 Scopus citations

Abstract

The Bi(111) surface was studied by scanning tunneling microscopy (STM), transmission electron microscopy (TEM), and angle-resolved photoemission spectroscopy (ARPES) in order to verify the existence of a recently proposed surface charge-density wave (CDW) [Ch. R. Ast and H. Höchst, Phys. Rev. Lett. 90, 016403 (2003)]. The STM and TEM results do 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 center 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.

Original language	English (US)
Article number	085440
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	72
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevB.72.085440
State	Published - Aug 15 2005

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.72.085440

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Kim, T. K., Wells, J., Kirkegaard, C., Li, Z., Hoffmann, S. V., Gayone, J. E., Fernandez-Torrente, I., Häberle, P., Pascual, J. I., Moore, K. T., Schwartz, A. J., He, H., Spence, J., Downing, K. H., Lazar, S., Tichelaar, F. D., Borisenko, S. V., Knupfer, M., & Hofmann, P. (2005). Evidence against a charge density wave on Bi(111). Physical Review B - Condensed Matter and Materials Physics, 72(8), Article 085440. https://doi.org/10.1103/PhysRevB.72.085440

Kim, TK, Wells, J, Kirkegaard, C, Li, Z, Hoffmann, SV, Gayone, JE, Fernandez-Torrente, I, Häberle, P, Pascual, JI, Moore, KT, Schwartz, AJ, He, H, Spence, J, Downing, KH, Lazar, S, Tichelaar, FD, Borisenko, SV, Knupfer, M & Hofmann, P 2005, 'Evidence against a charge density wave on Bi(111)', Physical Review B - Condensed Matter and Materials Physics, vol. 72, no. 8, 085440. https://doi.org/10.1103/PhysRevB.72.085440

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title = "Evidence against a charge density wave on Bi(111)",

abstract = "The Bi(111) surface was studied by scanning tunneling microscopy (STM), transmission electron microscopy (TEM), and angle-resolved photoemission spectroscopy (ARPES) in order to verify the existence of a recently proposed surface charge-density wave (CDW) [Ch. R. Ast and H. H{\"o}chst, Phys. Rev. Lett. 90, 016403 (2003)]. The STM and TEM results do 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 center 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.",

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AU - Wells, J.

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AU - Li, Z.

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AU - Gayone, J. E.

AU - Fernandez-Torrente, I.

AU - Häberle, P.

AU - Pascual, J. I.

AU - Moore, K. T.

AU - Schwartz, A. J.

AU - He, H.

AU - Spence, John

AU - Downing, K. H.

AU - Lazar, S.

AU - Tichelaar, F. D.

AU - Borisenko, S. V.

AU - Knupfer, M.

AU - Hofmann, Ph

PY - 2005/8/15

Y1 - 2005/8/15

N2 - The Bi(111) surface was studied by scanning tunneling microscopy (STM), transmission electron microscopy (TEM), and angle-resolved photoemission spectroscopy (ARPES) in order to verify the existence of a recently proposed surface charge-density wave (CDW) [Ch. R. Ast and H. Höchst, Phys. Rev. Lett. 90, 016403 (2003)]. The STM and TEM results do 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 center 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.

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Evidence against a charge density wave on Bi(111)

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