Superconducting pairing symmetry in
Abstract
Topological superconductors have long been sought for their potential use in quantum computing. The type-II Weyl semimetal MoTe2 is an obvious candidate, exhibiting a superconducting state below 500 mK at ambient pressure, but the question remains whether the pairing is conventional s++ or topological s+-. The application of external pressure favors the superconducting state in MoTe2 and suppresses the structural transition from 1T' to Td. The competition between the two structures leads to a mixed phase that strongly enhances the disorder present in the system, remarkably without affecting the superconducting transition temperature, in contrast to the expectation of s+- pairing superconductivity. Our thorough analysis of the electrical and Hall resistivities as a function of pressure yields the most accurate temperature-pressure phase diagram available to date for MoTe2 and a detailed view of the relationship between disorder and superconductivity, supporting a conventional s++ pairing symmetry.
- Authors:
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); European Union (EU); São Paulo Research Foundation
- OSTI Identifier:
- 2212825
- Alternate Identifier(s):
- OSTI ID: 2284069
- Report Number(s):
- BNL-225268-2024-JAAM
Journal ID: ISSN 2475-9953; PRMHAR; L111801
- Grant/Contract Number:
- SC0012704; 101019024; 2018/0823-0; 2021/02314-9; 2022/05447-2
- Resource Type:
- Published Article
- Journal Name:
- Physical Review Materials
- Additional Journal Information:
- Journal Name: Physical Review Materials Journal Volume: 7 Journal Issue: 11; Journal ID: ISSN 2475-9953
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Piva, M. M., Kutelak, L. O., Borth, R., Liu, Y., Petrovic, C., dos Reis, R. D., and Nicklas, M. Superconducting pairing symmetry in MoTe 2. United States: N. p., 2023.
Web. doi:10.1103/PhysRevMaterials.7.L111801.
Piva, M. M., Kutelak, L. O., Borth, R., Liu, Y., Petrovic, C., dos Reis, R. D., & Nicklas, M. Superconducting pairing symmetry in MoTe 2. United States. https://doi.org/10.1103/PhysRevMaterials.7.L111801
Piva, M. M., Kutelak, L. O., Borth, R., Liu, Y., Petrovic, C., dos Reis, R. D., and Nicklas, M. Thu .
"Superconducting pairing symmetry in MoTe 2". United States. https://doi.org/10.1103/PhysRevMaterials.7.L111801.
@article{osti_2212825,
title = {Superconducting pairing symmetry in MoTe 2},
author = {Piva, M. M. and Kutelak, L. O. and Borth, R. and Liu, Y. and Petrovic, C. and dos Reis, R. D. and Nicklas, M.},
abstractNote = {Topological superconductors have long been sought for their potential use in quantum computing. The type-II Weyl semimetal MoTe2 is an obvious candidate, exhibiting a superconducting state below 500 mK at ambient pressure, but the question remains whether the pairing is conventional s++ or topological s+-. The application of external pressure favors the superconducting state in MoTe2 and suppresses the structural transition from 1T' to Td. The competition between the two structures leads to a mixed phase that strongly enhances the disorder present in the system, remarkably without affecting the superconducting transition temperature, in contrast to the expectation of s+- pairing superconductivity. Our thorough analysis of the electrical and Hall resistivities as a function of pressure yields the most accurate temperature-pressure phase diagram available to date for MoTe2 and a detailed view of the relationship between disorder and superconductivity, supporting a conventional s++ pairing symmetry.},
doi = {10.1103/PhysRevMaterials.7.L111801},
journal = {Physical Review Materials},
number = 11,
volume = 7,
place = {United States},
year = {Thu Nov 16 00:00:00 EST 2023},
month = {Thu Nov 16 00:00:00 EST 2023}
}
https://doi.org/10.1103/PhysRevMaterials.7.L111801
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