- Tytuł:
- STM and STS Investigations of Bi$\text{}_{2}$Te$\text{}_{3}$ Surface
- Autorzy:
-
Winiarz, Sz.
Czajka, R.
Suto, S.
Lośtak, P.
Szuba, S.
Kasuya, A. - Powiązania:
- https://bibliotekanauki.pl/articles/2036967.pdf
- Data publikacji:
- 2003
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
68.37.Ef
61.48.+w - Opis:
- We carried out scanning tunneling microscopy/spectroscopy studies of Bi$\text{}_{2}$Te$\text{}_{3}$ 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$\text{}_{2}$Te$\text{}_{3}$, 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.
- Źródło:
-
Acta Physica Polonica A; 2003, 104, 3-4; 389-395
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł