Cristin-resultat-ID: 1856431
Sist endret: 22. januar 2021 16:13
NVI-rapporteringsår: 2020
Resultat
Vitenskapelig artikkel
2020

Schwinger boson study of superconductivity mediated by antiferromagnetic spin fluctuations

Bidragsytere:
  • Eirik Erlandsen og
  • Asle Sudbø

Tidsskrift

Physical review B (PRB)
ISSN 2469-9950
e-ISSN 2469-9969
NVI-nivå 2

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2020
Publisert online: 2020
Trykket: 2020
Volum: 102
Hefte: 21
Artikkelnummer: 214502
Open Access

Importkilder

Scopus-ID: 2-s2.0-85097574164

Klassifisering

Vitenskapsdisipliner

Kondenserte fasers fysikk

Emneord

Klassiske og kvantemekaniske kritiske fenomen • Ukonvensjonell superledning

Beskrivelse Beskrivelse

Tittel

Schwinger boson study of superconductivity mediated by antiferromagnetic spin fluctuations

Sammendrag

We study superconductivity in a normal metal, arising from effective electron-electron interactions mediated by spin fluctuations in a neighboring antiferromagnetic insulator. Introducing a frustrating next-nearest neighbor interaction in a Néel antiferromagnet with an uncompensated interface, the superconducting critical temperature is found to be enhanced as the frustration is increased. Further, for sufficiently large next-nearest neighbor interaction, the antiferromagnet is driven into a stripe phase, which can also give rise to attractive electronelectron interactions. For the stripe phase, as previously reported for the Néel phase, the superconducting critical temperature is found to be amplified for an uncompensated interface where the normal metal conduction electrons are coupled to only one of the two sublattices of the magnet. The superconducting critical temperature arising from fluctuations in the stripe phase antiferromagnet can be further enhanced by approaching the transition back to the Néel phase.

Bidragsytere

Eirik Erlandsen

  • Tilknyttet:
    Forfatter
    ved Institutt for fysikk ved Norges teknisk-naturvitenskapelige universitet

Asle Sudbø

  • Tilknyttet:
    Forfatter
    ved Institutt for fysikk ved Norges teknisk-naturvitenskapelige universitet
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