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BCS to incoherent superconductivity crossovers in the Yukawa-SYK model on a lattice

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arxiv 2302.13138 v2 pith:BTDQA3SA submitted 2023-02-25 cond-mat.supr-con cond-mat.str-el

Davide Valentinis , Gian Andrea Inkof , Jörg Schmalian This is my paper · ORCID
classification cond-mat.supr-concond-mat.str-el
keywords couplingcrossoversincoherentlatticemodelphasesuperconductivityyukawa-syk
verification ladder T0 review T1 audit T2 compute T3 formal
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We provide a quantitative and controlled analysis of the phase diagram of the the Yukawa-SYK model on a lattice, in the normal and superconducting states. We analyze the entire crossover from BCS/weak-coupling to Eliashberg/strong coupling superconductivity, as a function of fermion-boson interaction strength and hopping parameter. Cooper pairs of sharp Fermi-liquid quasiparticles at weak coupling evolve into pairing of fully incoherent fermions in the non-Fermi liquid regime. The crossovers leave observable traces in the critical temperature, the zero-temperature and zero-energy gap, the entropy, and the phase stiffness.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The foot, the fan, and the cuprate phase diagram: Fermi-volume-changing quantum phase transitions

    cond-mat.str-el 2025-01 conditional novelty 3.0 of 10

    The paper attributes the cuprate 'foot' to a disordered spin-density-wave transition and the 'fan' to a disorder-tuned FL-to-FL* Fermi-volume-changing transition described by a two-dimensional Yukawa-SYK model.

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