Phase diagram of a pressure-induced superconducting state and its relation to the Hall coefficient of Bi2Te3 single crystals
Chao Zhang, Liling Sun, Zhaoyu Chen, Xingjiang Zhou, Qi Wu, Wei Yi, Jing Guo, Xiaoli Dong, Zhongxian Zhao
DOI 10.1103/PhysRevB.83.140504 · Physical Review B
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Abstract
Pressure-induced superconductivity and its relation to the corresponding Hall coefficient (RH) have been investigated for Bi2Te3, a known topological insulator, through in situ measurements of magnetoresistance and ac susceptibility with diamond anvil cells. A full phase diagram is presented which shows a complex dependence of the superconducting transition temperature as a function of pressure over an extensive range. High-pressure RH measurements reveal a close relation to these complex behaviors; in particular, an abrupt change of dRH/dP is observed in crossing from the nonsuperconducting to the superconducting ambient-pressure phase.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Se3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.8 | Pressure not reported | unknown |
| Bi2Te3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.6 | 3.2 GPa | onset |
| Bi2Te3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.5 | 4.8 GPa | onset |
| Bi2Te3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.3 | 5.8 GPa | unknown |
| Bi2Te3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9.5 | 13.6 GPa | onset |
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