Abstract
Pressure-induced superconductivity and its relation to the corresponding Hall coefficient () have been investigated for BiTe, 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 measurements reveal a close relation to these complex behaviors; in particular, an abrupt change of is observed in crossing from the nonsuperconducting to the superconducting ambient-pressure phase.
- Received 21 September 2010
DOI:https://doi.org/10.1103/PhysRevB.83.140504
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