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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
References
  • 1. Gao Min, D.M. Rowe, Solid-State Electron., 43, 923, 1999
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  • 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
YADDA identifier
bwmeta1.element.bwnjournal-article-appv104n310kz
Identifiers
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