Pressure-induced superconductivity extending across the topological phase transition in thallium-based topological materials

Pei C, Huang P, Zhu P, Liu L, Wang Q, Zhao Y, Gao L, Li C, Cao W, Lv J, Li X, Wang Z, Yao Y, Yan B, Felser C, Chen Y, Liu H, Qi Y (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Cell Reports Physical Science Cell Press

Book Volume: 3

Article Number: 101094

Journal Issue: 10

DOI: 10.1016/j.xcrp.2022.101094

Abstract

The coexistence of superconductivity and topology holds the potential to realize exotic quantum states of matter. Here, we report superconductivity induced by high pressure in three thallium-based materials, covering the phase transition from a normal insulator (TlBiS2) to a topological insulator (TlBiSe2) through a Dirac semimetal (TlBiSeS). By increasing the pressure up to 60 GPa, we observe superconductivity phase diagrams with maximal critical temperature (Tc) values at 6.0–8.1 K. Our density functional theory calculations reveal topological surface states in superconductivity phases for all three compounds. Our study paves the path to explore topological superconductivity and topological phase transitions.

Involved external institutions

Beijing Institute of Technology (BIT) / 北京理工大学 CN China (CN) Jilin University (JLU) / 吉林大学 CN China (CN) ShanghaiTech University / 上海科技大学 CN China (CN) Weizmann Institute of Science IL Israel (IL) Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE)

How to cite

APA:

Pei, C., Huang, P., Zhu, P., Liu, L., Wang, Q., Zhao, Y.,... Qi, Y. (2022). Pressure-induced superconductivity extending across the topological phase transition in thallium-based topological materials. Cell Reports Physical Science, 3(10). https://doi.org/10.1016/j.xcrp.2022.101094

MLA:

Pei, Cuiying, et al. "Pressure-induced superconductivity extending across the topological phase transition in thallium-based topological materials." Cell Reports Physical Science 3.10 (2022).

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