Orbital effect for the Fulde-Ferrell-Larkin-Ovchinnikov phase in a quasi-two-dimensional superconductor in a parallel magnetic field

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Abstract

We theoretically study the orbital destructive effect against superconductivity in a parallel magnetic field in the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO or LOFF) phase at zero temperature in a quasi-two-dimensional (Q2D) conductor. We demonstrate that at zero temperature a special parameter, λ=l(H)/d, is responsible for strength of the orbital effect, where l(H) is a typical "size" of the quasiclassical electron orbit in a magnetic field and d is the interplane distance. We discuss applications of our results to the existing experiments on the FFLO phase in the organic Q2D conductors κ-(ET)2Cu(NCS)2 and κ-(ET)2Cu[N(CN)2]Cl.

Original languageEnglish (US)
Article number144504
JournalPhysical Review B
Volume97
Issue number14
DOIs
StatePublished - Apr 4 2018

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Superconducting materials
conductors
Organic conductors
Magnetic fields
orbitals
Superconductivity
magnetic fields
Orbits
superconductivity
orbits
Temperature
temperature
Electrons
electrons
Experiments

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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title = "Orbital effect for the Fulde-Ferrell-Larkin-Ovchinnikov phase in a quasi-two-dimensional superconductor in a parallel magnetic field",
abstract = "We theoretically study the orbital destructive effect against superconductivity in a parallel magnetic field in the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO or LOFF) phase at zero temperature in a quasi-two-dimensional (Q2D) conductor. We demonstrate that at zero temperature a special parameter, λ=l(H)/d, is responsible for strength of the orbital effect, where l(H) is a typical {"}size{"} of the quasiclassical electron orbit in a magnetic field and d is the interplane distance. We discuss applications of our results to the existing experiments on the FFLO phase in the organic Q2D conductors κ-(ET)2Cu(NCS)2 and κ-(ET)2Cu[N(CN)2]Cl.",
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AB - We theoretically study the orbital destructive effect against superconductivity in a parallel magnetic field in the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO or LOFF) phase at zero temperature in a quasi-two-dimensional (Q2D) conductor. We demonstrate that at zero temperature a special parameter, λ=l(H)/d, is responsible for strength of the orbital effect, where l(H) is a typical "size" of the quasiclassical electron orbit in a magnetic field and d is the interplane distance. We discuss applications of our results to the existing experiments on the FFLO phase in the organic Q2D conductors κ-(ET)2Cu(NCS)2 and κ-(ET)2Cu[N(CN)2]Cl.

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