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The comprehensive phase evolution for Bi2Te3 topological compound as function of pressure.
- Source :
- Journal of Applied Physics; Jun2012, Vol. 111 Issue 11, p112630, 6p
- Publication Year :
- 2012
-
Abstract
- The recently discovered three-dimensional topological insulator Bi2Te3 is studied as function of pressure in terms of crystal structures, resistance, and Hall coefficient. The superconductivity is found in phase I (ambient phase) Bi2Te3 with Tc ∼ 3 K, which is related to the topological features. The evolution of crystal structure with pressure is investigated by high pressure synchrotron radiation experiments that reveal structural transitions occurring at about 8 GPa, 13 GPa, and 16 GPa, respectively. Furthermore, the high pressure phases of Bi2Te3 are also superconducting but with much higher Tc ∼ 8 K. The superconducting transitions are compared with those for Bi, Te elements. A global phase diagram of Bi2Te3 as function of pressure up to 30 GPa is obtained. [ABSTRACT FROM AUTHOR]
- Subjects :
- TOPOLOGY
CRYSTALS
CRYSTALLOGRAPHY
SUPERCONDUCTIVITY
ELECTRIC conductivity
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 111
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 76605919
- Full Text :
- https://doi.org/10.1063/1.4726258