Reentrant behavior in Landau–Fermi liquids with spin-split Pomeranchuk instabilities

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 ty...

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Detalles Bibliográficos
Autores principales: Rodriguez Ponte, Pablo Agustín, Cabra, Daniel Carlos, Grandi, Nicolás Esteban
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2012
Materias:
Física
Fermi liquid instabilities
Pomeranchuk
Spin-split
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/129664
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-129664
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Fermi liquid instabilities
Pomeranchuk
Spin-split
spellingShingle Física
Fermi liquid instabilities
Pomeranchuk
Spin-split
Rodriguez Ponte, Pablo Agustín
Cabra, Daniel Carlos
Grandi, Nicolás Esteban
Reentrant behavior in Landau–Fermi liquids with spin-split Pomeranchuk instabilities
topic_facet Física
Fermi liquid instabilities
Pomeranchuk
Spin-split
description 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 URu₂Si₂ and Sr₃Ru₂O₇.
format Articulo
Preprint
author Rodriguez Ponte, Pablo Agustín
Cabra, Daniel Carlos
Grandi, Nicolás Esteban
author_facet Rodriguez Ponte, Pablo Agustín
Cabra, Daniel Carlos
Grandi, Nicolás Esteban
author_sort Rodriguez Ponte, Pablo Agustín
title Reentrant behavior in Landau–Fermi liquids with spin-split Pomeranchuk instabilities
title_short Reentrant behavior in Landau–Fermi liquids with spin-split Pomeranchuk instabilities
title_full Reentrant behavior in Landau–Fermi liquids with spin-split Pomeranchuk instabilities
title_fullStr Reentrant behavior in Landau–Fermi liquids with spin-split Pomeranchuk instabilities
title_full_unstemmed Reentrant behavior in Landau–Fermi liquids with spin-split Pomeranchuk instabilities
title_sort reentrant behavior in landau–fermi liquids with spin-split pomeranchuk instabilities
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/129664
work_keys_str_mv AT rodriguezpontepabloagustin reentrantbehaviorinlandaufermiliquidswithspinsplitpomeranchukinstabilities
AT cabradanielcarlos reentrantbehaviorinlandaufermiliquidswithspinsplitpomeranchukinstabilities
AT grandinicolasesteban reentrantbehaviorinlandaufermiliquidswithspinsplitpomeranchukinstabilities
bdutipo_str Repositorios
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