Abstract
Bardeen’s formula of the tunneling current is extended to include atomic features of the tip-surface system of scanning tunneling microscopy (STM). The electronic states of the sample surface and the tip is calculated by the local density functional approach (LDA) and they are used as the input data for the numerical simulation of the STM image. Normal images are resulted by the tip with a single apex atom, while abnormal images tend to be caused by the tip with several atoms on the tip apex. For the former type of the tips, tunnel current concentrates dominantly on a single apex atom. Some numerical results are presented, which demonstrate the importance of the first-principles simulation resolving puzzles appeared in STM process.
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References
for example, Proceedings of the STM conferences, J. Vac. Sci. and Technol. A8, (1990), ibid B9, (1991).
M.Tsukada, K.Kobayashi, N.Isshiki, and H.Kageshima, Surface Sci. Reports 13, 265 (1991).
J.Bardeen, Phys. Rev. Lett. 6, 57 (1961).
M.Tsukada and N.Shima, J. Phys. Soc. Jpn. 56, 2875 (1987).
H.Kageshima, Doctor Thesis, University of Tokyo, 1991.
N.Isshiki, K.Kobayashi, and M.Tsukada, J. Vac. Sci. and Technol. B9, 475 (1991).
N.Isshiki, K.Kobayashi, and M.Tsukada, Surface Sci. 238, L439 (1990).
T.Sakurai and T.Hashizume, private commun.
M.Katayama, R.S.Williams, M.Kato, E.Nomuraa, and M.Aono, Phys. Rev. Lett. 67, 267 (1991).
S.Watanabe, M.Aono, and M.Tsukada, Phys. Rev. B, in press.
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© 1992 Springer-Verlag Berlin Heidelberg
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Tsukada, M., Kobayashi, K., Kageshima, H., Isshiki, N., Watanabe, S. (1992). Computational Physics Approach to Scanning Tunneling Microscopy and Spectroscopy. In: Miyashita, S., Imada, M., Takayama, H. (eds) Computational Approaches in Condensed-Matter Physics. Springer Proceedings in Physics, vol 70. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-84821-6_3
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DOI: https://doi.org/10.1007/978-3-642-84821-6_3
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