REENTRANT BEHAVIOR IN LANDAU–FERMI LIQUIDS WITH SPIN-SPLIT POMERANCHUK INSTABILITIES

Author:

PONTE P. RODRÍGUEZ1,CABRA D. C.1,GRANDI N.12

Affiliation:

1. Instituto de Fí sica de La Plata and Departamento de Física, Universidad Nacional de La Plata, C.C. 67, 1900 La Plata, Argentina

2. Abdus Salam International Centre for Theoretical Physics, Associate Scheme, Strada Costiera 11, 34151, Trieste, Italy

Abstract

We study the effects of spin-antisymmetric interactions on the stability of a Landau–Fermi liquid on the square lattice, using the generalized Pomeranchuk method for two-dimensional lattice systems. In particular, we analyze interactions that could induce instabilities of the so-called spin-split type, that is when spin-up and spin-down Fermi surfaces are displaced with respect to each other. The phase space is studied as a function of the strength of the interaction V, the electron chemical potential μ and an external magnetic field h. We find that such interactions produce in general an enhancement of the instability region of the Landau–Fermi liquid. More interestingly, in certain regions of the V–μ phase space, we find a reentrant behavior as a function of the magnetic field h, similar to that found in recent experiments, e.g. in URu 2 Si 2 and Sr 3 Ru 2 O 7.

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Pomeranchuk instabilities in holographic metals;Journal of High Energy Physics;2021-05

2. Generalized susceptibilities and Landau parameters for anisotropic Fermi liquids;International Journal of Modern Physics B;2015-06-23

3. SUPERCONDUCTIVITY NEAR POMERANCHUK INSTABILITIES IN THE SPIN CHANNEL;Modern Physics Letters B;2013-05-16

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