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Surface Pair-Density-Wave Superconducting and Superfluid States
KTH, School of Engineering Sciences (SCI), Physics.
KTH, School of Engineering Sciences (SCI), Physics.
KTH, School of Engineering Sciences (SCI), Physics.ORCID iD: 0000-0001-7593-4543
2019 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 122, no 16, article id 165302Article in journal (Refereed) Published
Abstract [en]

Fulde, Ferrell, Larkin, and Ovchinnikov (FFLO) predicted inhomogeneous superconducting and superfluid ground states, spontaneously breaking translation symmetries. In this Letter, we demonstrate that the transition from the FFLO to the normal state as a function of temperature or increased Fermi surface splitting is not a direct one. Instead, the system has an additional phase transition to a different state where pair-density-wave superconductivity (or superfluidity) exists only on the boundaries of the system, while the bulk of the system is normal. The surface pair-density-wave state is very robust and exists for much larger fields and temperatures than the FFLO state.

Place, publisher, year, edition, pages
American Physical Society, 2019. Vol. 122, no 16, article id 165302
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-251711DOI: 10.1103/PhysRevLett.122.165302ISI: 000466440800002PubMedID: 31075028Scopus ID: 2-s2.0-85065146221OAI: oai:DiVA.org:kth-251711DiVA, id: diva2:1316823
Note

QC 20190521

Available from: 2019-05-21 Created: 2019-05-21 Last updated: 2020-02-17Bibliographically approved

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