Thermodynamics of a fermi liquid beyond the low-energy limit

Andrey V. Chubukov, Dmitrii L. Maslov, Suhas Gangadharaiah, Leonid I. Glazman

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

We consider the nonanalytic temperature dependences of the specific heat coefficient, C(T)/T, and spin susceptibility, χs(T), of 2D interacting fermions beyond the weak-coupling limit. We demonstrate within the Luttinger-Ward formalism that the leading temperature dependences of C(T)/T and χs(T) are linear in T, and are described by the Fermi liquid theory. We show that these temperature dependences are universally determined by the states near the Fermi level and, for a generic interaction, are expressed via the spin and charge components of the exact backscattering amplitude of quasiparticles. We compare our theory to recent experiments on monolayers of He3.

Original languageEnglish (US)
Article number026402
JournalPhysical review letters
Volume95
Issue number2
DOIs
StatePublished - Jul 8 2005

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