Fulde-Ferrell-Larkin-Ovchinnikov pairing induced by a Weyl nodal line in an Ising superconductor with a high critical field
Abstract
Superconductivity and electron topology are two quantum phenomena that have attracted much interest, but no causal relationship between them has been reported because superconductivity is a many-body effect due to electron-electron interaction, while electron topology is a single-particle manifestation of electron states. In this work, we demonstrate that electron topology can induce Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) pairing in Ising Bardeen-Cooper-Schrieffer (IBCS) superconductors. Specifically, we predict that the nonmagnetic metals of the MA2Z4 family, including α1-TaSi2P4, α1-TaSi2N4, α2-TaGe2P4, α1-NbSi2P4, and α2-NbGe2P4 monolayers, are all IBCS superconductors with a transition temperature ranging from a few to tens of degrees Kelvin. The intrinsic IBCS pairing alone will enhance the in-plane critical field Bc to ~20–60 times the Pauli limit Bp, and the extrinsic FFLO pairing evoked by topological Weyl nodal lines under a magnetic field can further double the Bc/Bp ratio. Our findings not only enrich the fundamental relationship between superconductivity and electron topology, but they also yield an effective approach to enhance the robustness of superconductivity.
- Authors:
-
- Ocean University of China, Shandong (China)
- Univ. of Utah, Salt Lake City, UT (United States)
- Publication Date:
- Research Org.:
- Univ. of Utah, Salt Lake City, UT (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC); Natural Science Foundation of Shandong Province
- OSTI Identifier:
- 1905831
- Grant/Contract Number:
- FG02-04ER46148; 12004357; ZR2020QA053
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B
- Additional Journal Information:
- Journal Volume: 105; Journal Issue: 2; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Zhang, Xiaoming, and Liu, Feng. Fulde-Ferrell-Larkin-Ovchinnikov pairing induced by a Weyl nodal line in an Ising superconductor with a high critical field. United States: N. p., 2022.
Web. doi:10.1103/physrevb.105.024505.
Zhang, Xiaoming, & Liu, Feng. Fulde-Ferrell-Larkin-Ovchinnikov pairing induced by a Weyl nodal line in an Ising superconductor with a high critical field. United States. https://doi.org/10.1103/physrevb.105.024505
Zhang, Xiaoming, and Liu, Feng. Thu .
"Fulde-Ferrell-Larkin-Ovchinnikov pairing induced by a Weyl nodal line in an Ising superconductor with a high critical field". United States. https://doi.org/10.1103/physrevb.105.024505. https://www.osti.gov/servlets/purl/1905831.
@article{osti_1905831,
title = {Fulde-Ferrell-Larkin-Ovchinnikov pairing induced by a Weyl nodal line in an Ising superconductor with a high critical field},
author = {Zhang, Xiaoming and Liu, Feng},
abstractNote = {Superconductivity and electron topology are two quantum phenomena that have attracted much interest, but no causal relationship between them has been reported because superconductivity is a many-body effect due to electron-electron interaction, while electron topology is a single-particle manifestation of electron states. In this work, we demonstrate that electron topology can induce Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) pairing in Ising Bardeen-Cooper-Schrieffer (IBCS) superconductors. Specifically, we predict that the nonmagnetic metals of the MA2Z4 family, including α1-TaSi2P4, α1-TaSi2N4, α2-TaGe2P4, α1-NbSi2P4, and α2-NbGe2P4 monolayers, are all IBCS superconductors with a transition temperature ranging from a few to tens of degrees Kelvin. The intrinsic IBCS pairing alone will enhance the in-plane critical field Bc to ~20–60 times the Pauli limit Bp, and the extrinsic FFLO pairing evoked by topological Weyl nodal lines under a magnetic field can further double the Bc/Bp ratio. Our findings not only enrich the fundamental relationship between superconductivity and electron topology, but they also yield an effective approach to enhance the robustness of superconductivity.},
doi = {10.1103/physrevb.105.024505},
journal = {Physical Review. B},
number = 2,
volume = 105,
place = {United States},
year = {Thu Jan 06 00:00:00 EST 2022},
month = {Thu Jan 06 00:00:00 EST 2022}
}
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