Emergent anisotropy in the Fulde-Ferrell-Larkin-Ovchinnikov state.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
03 Oct 2022
03 Oct 2022
Historique:
received:
15
04
2022
accepted:
08
09
2022
entrez:
3
10
2022
pubmed:
4
10
2022
medline:
4
10
2022
Statut:
epublish
Résumé
Exotic superconductivity is formed by unconventional electron pairing and exhibits various unique properties that cannot be explained by the basic theory. The Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state is known as an exotic superconducting state in that the electron pairs have a finite center-of-mass momentum leading to a spatially modulated pattern of superconductivity. The spatial modulation endows the FFLO state with emergent anisotropy. However, the anisotropy has never been experimentally verified despite numerous efforts over the years. Here, we report detection of anisotropic acoustic responses depending on the sound propagation direction appearing above the Pauli limit. This anisotropy reveals that the two-dimensional FFLO state has a center-of-mass momentum parallel to the nesting vector on the Fermi surface. The present findings will facilitate our understanding of not only superconductivity in solids but also exotic pairings of various particles.
Identifiants
pubmed: 36192393
doi: 10.1038/s41467-022-33354-1
pii: 10.1038/s41467-022-33354-1
pmc: PMC9530125
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
5590Subventions
Organisme : MEXT | Japan Society for the Promotion of Science (JSPS)
ID : 22H04466
Informations de copyright
© 2022. The Author(s).
Références
Phys Rev Lett. 2017 Nov 24;119(21):217002
pubmed: 29219397
Nat Commun. 2021 Jun 16;12(1):3676
pubmed: 34135329
Phys Rev Lett. 2011 Aug 19;107(8):087002
pubmed: 21929196
Phys Rev B Condens Matter. 1994 Nov 1;50(17):12760-12765
pubmed: 9975442
Phys Rev Lett. 1990 Dec 10;65(24):3052-3055
pubmed: 10042767
Nature. 2003 Sep 4;425(6953):51-5
pubmed: 12955136
Phys Rev Lett. 2018 Oct 12;121(15):157004
pubmed: 30362806
Phys Rev Lett. 2005 Sep 9;95(11):117003
pubmed: 16197035
Phys Rev Lett. 2007 Aug 3;99(5):057001
pubmed: 17930779
Nature. 2007 Oct 4;449(7162):584-7
pubmed: 17914392
Phys Rev Lett. 2003 Feb 14;90(6):067003
pubmed: 12633319
Phys Rev Lett. 2020 Mar 13;124(10):107001
pubmed: 32216412
Phys Rev Lett. 2002 Jan 14;88(2):027002
pubmed: 11801028
Phys Rev Lett. 2007 Nov 2;99(18):187002
pubmed: 17995428
Phys Rev Lett. 2006 Oct 13;97(15):157001
pubmed: 17155350
Phys Rev Lett. 2017 Jun 30;118(26):267001
pubmed: 28707943