Even- and Odd-Frequency Superconductivity in Q1D Organic Superconductors Under Magnetic Field

Fukui, Kôichi; Kato, Yasuyuki

doi:10.1007/s10909-018-02142-x

Cited by 1 publication

(1 citation statement)

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“…As Matsumoto et al pointed out [31], a plausible scenario is to break time-reversal symmetry in a usual ESS superconductor by applying an external magnetic field. In this case, by symmetry arguments (and as we shall see later, for Eliashberg theory calculations), an OST component is induced by the field and coexists with the ESS part [11,[31][32][33]. This approach indeed opens the possibility of observing odd frequency pairing in real materials as has been predicted by ab initio Eliashberg theory calculations in the case of MgB 2 [11].…”

Section: Introductionmentioning

confidence: 72%

Influence of electron–phonon coupling strength on signatures of even and odd-frequency superconductivity

Aperis¹,

Morooka²,

Oppeneer³

2020

Annals of Physics

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The recently discovered APt3P (A=Sr,Ca,La) family of superconductors offers a platform to study frequency dependent superconducting phenomena as the electron-phonon coupling varies from weak to strong. Here we perform ab initio Eliashberg theory calculations to investigate two such phenomena, the occurrence of dip-hump structures in the tunneling spectra and the magnetic field induced coexistence of even and odd frequency superconductivity in these compounds. By calculating the superfluid density, we make predictions for the occurrence of the paramagnetic Meissner effect as a hallmark of odd frequency pairing. Our results provide a link between two seemingly uncorrelated aspects of even and odd frequency superconductivity and provide theoretical guidance for the experimental identification of bulk odd frequency superconductivity in this material's family.

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