Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5491775 | Physica B: Condensed Matter | 2017 | 13 Pages |
Abstract
Structural stability and phase transition of topological insulator Bi2Te3 were studied via angle-dispersive synchrotron radiation X-ray diffraction under high pressure and low temperature condition. The results manifest that the R-3m phase (phase I) is stable at 8 K over the pressure range up to 10 GPa and phase transition occurs between 8 K and 45 K at 8 GPa. According to the Birch-Murnaghan equation of state, the bulk modulus at ambient pressure B0 was estimated to be 45 ± 3 GPa with the assumption of B0Ⲡ= 4. The structural robustness of phase I at 8 K suggests that the superconductivity below 10 GPa is related to phase I. Topological properties of superconducting Bi2Te3 phase under pressure were discussed.
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Condensed Matter Physics
Authors
J.L. Zhang, S.J. Zhang, J.L. Zhu, Q.Q. Liu, X.C. Wang, C.Q. Jin, J.C. Yu,