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2003 | 104 | 3-4 | 389-395

Article title

STM and STS Investigations of Bi_2Te_3 Surface

Content

Title variants

Languages of publication

EN

Abstracts

EN
We carried out scanning tunneling microscopy/spectroscopy studies of Bi_2Te_3 surface, which, to the best of our knowledge, had not been attempted so far. We got images of surface of the material in many scales from micrometers to nanometers, which showed a layered structure of Bi_2Te_3, with many monoatomic terraces. We found agreement between measured heights and corresponding bulk crystal structure derived from X-ray data. In nanoscale we obtained an atomic resolution. Using scanning tunneling spectroscopy we carried out examination of the electronic structure. We observed different I-V characteristics and contrast on current imaging tunneling spectroscopy maps on non equivalent terraces. The dI/dV (~ density of states) curves referred to those terraces were compared with theoretically calculated by Larson et al. density of states derived from Bi p and Te-1 p orbitals. The analysis of our results allowed us to distinguish bismuth from tellurium planes.

Keywords

EN

Year

Volume

104

Issue

3-4

Pages

389-395

Physical description

Dates

published
2003-09/10
received
2003-07-16

Contributors

author
  • Faculty of Technical Physics, Poznan University of Technology, Nieszawska 13A, 60-965 Poznań, Poland
author
  • Faculty of Technical Physics, Poznan University of Technology, Nieszawska 13A, 60-965 Poznań, Poland
  • Center for Interdisciplinary Research, Tohoku University, Aramaki-Aza, Aoba-ku, 980-8578 Sendai, Japan
author
  • Dept. of Physics, Graduate School of Science, Tohoku University, 980-8578 Sendai, Japan
author
  • University of Pardubice, Studentska 84, 53210 Pardubice, Czech Republic
author
  • Faculty of Technical Physics, Poznan University of Technology, Nieszawska 13A, 60-965 Poznań, Poland
author
  • Center for Interdisciplinary Research, Tohoku University, Aramaki-Aza, Aoba-ku, 980-8578 Sendai, Japan

References

  • 1. Gao Min, D.M. Rowe, Solid-State Electron., 43, 923, 1999
  • 2. S.K. Mishra, S. Satpathy, O. Jepsen, J. Phys., Condens. Matter, 9, 461, 1997
  • 3. P. Larson, V.A. Greanya, W.C. Tonjes, Rong Liu, S.D. Mahanti, Phys. Rev. B, 65, 085108, 2002
  • 4. P. Larson, S.D. Mahanti, Phys. Rev. B, 61, 8162, 2000
  • 5. G.A. Thomas, D.H. Rapkine, R.B. Van Dover, L.F. Mattheis, W.A. Surden, L.F. Schneemaper, J.V. Waszczak, Phys. Rev. B, 46, 1553, 1992
  • 6. R.W.G. Wyckoff, Crystal Structures, Vol. 2, Krieger, London 1986 and references therein
  • 7. H. Bando, T. Shimitzu, Y. Aiura, Y. Haruyama, K. Oka, Y. Nishihara, J. Vac. Sci. Technol. B, 14, 1060, 1996
  • 8. R. Czajka, J. Horak, P. Lostak, S. Karamazov, J. Vanis, J. Walachova, J. Vac. Sci. Technol. B, 18, 1194, 2000

Document Type

Publication order reference

Identifiers

YADDA identifier

bwmeta1.element.bwnjournal-article-appv104n310kz
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