Creation, stabilization, and investigation at ambient pressure of pressure-induced superconductivity in Bi_0.5Sb_1.5Te₃.

ABSTRACT: In light of breakthroughs in superconductivity under high pressure, and considering that record critical temperatures (T_cs) across various systems have been achieved under high pressure, the primary challenge for higher T_c should no longer solely be to increase T_c under extreme conditions but also to reduce, or ideally eliminate, the need for applied pressure in retaining pressure-induced or -enhanced superconductivity. The topological semiconductor Bi_0.5Sb_1.5Te₃ (BST) was chosen to demonstrate our approach to addressing this challenge and exploring its intriguing physics. Under pressures up to ~50 GPa, three superconducting phases (BST-I, -II, and -III) were observed. A superconducting phase in BST-I appears at ~4 GPa, with

SUBMITTER: Deng L 

PROVIDER: S-EPMC11831210 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature