通过高压电阻测量，发现了拓扑绝缘体化合物BizTe3压力诱导的超导性，在3-6GPa的压力范围内，超导临界温度L约为3K．高压下原位同步辐射的结果证明这个超导相来源于常压相结构．通过霍尔效应的测量，发现超导的Bi2Te3样品的载流子为P型．对高压同步辐射结果Reitveld精修得到的晶格参数和原子位置，并以此进行第一性原理计算，得到的高压下的电子结构仍然保持其拓扑不平凡性．由于Bi2Te3的体超导态和Dirac型的表面态之间的近邻效应，可以出现拓扑超导性．文章也讨论了其体态为拓扑超导体的可能性．
pressure-induced superconductivity was observed in a topological compound Bi2 Te3 with Tc of - 3K between 3 to 6 GPa via in-situ high-pressure resistance measurements. The combined in-situ high-pressure structure investigations with synchrotron radiation indicated that the superconductivity occurred with ambient structure before a structure phase transition occurred, p-type carrier was detected in superconducting Bi2 Te3 single crystal by the Hall effects measurements. Consequently, the first-principles calculations based on the structural data obtained by the Rietveld refinement of X-ray diffraction patterns at high pressure showed that the electronic structure under pressure remained topologically nontrivial. The results suggested that topological superconductivity can be realized in Bi2 Te3 due to the proximity effect between superconducting bulk states and Dirac-type surface states. We also discuss the possibility that the bulk state could be a topological superconductor.
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