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Article Dans Une Revue Physical Review D Année : 2021

Linear-in-T resistivity from semiholographic non-Fermi liquid models

Résumé

We construct a semiholographic effective theory in which the electron of a two-dimensional band hybridizes with a fermionic operator of a critical holographic sector, while also interacting with other bands that preserve quasiparticle characteristics. Besides the scaling dimension ν of the fermionic operator in the holographic sector, the effective theory has two dimensionless couplings α and γ determining the holographic and Fermi-liquid-type contributions to the self-energy respectively. We find that irrespective of the choice of the holographic critical sector, there exists a ratio of the effective couplings for which we obtain linear-in-T resistivity for a wide range of temperatures. This scaling persists to arbitrarily low temperatures when ν approaches unity in which limit we obtain a marginal Fermi liquid with a specific temperature dependence of the self-energy.

Dates et versions

hal-03115878 , version 1 (19-01-2021)

Identifiants

Citer

Benoît Douçot, Ayan Mukhopadhyay, Giuseppe Policastro, Sutapa Samanta. Linear-in-T resistivity from semiholographic non-Fermi liquid models. Physical Review D, 2021, 104 (8), pp.L081901. ⟨10.1103/PhysRevD.104.L081901⟩. ⟨hal-03115878⟩

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