Generalized Pomeranchuk instabilities in graphene

We study the presence of Pomeranchuk instabilities induced by interactions on a Fermi-liquid description of a graphene layer. Using a recently developed generalization of the Pomeranchuk method, we present a phase diagram in the space of fillings versus on-site and nearest-neighbors interactions. We...

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Autores principales: Lamas, Carlos Alberto, Cabra, Daniel Carlos, Grandi, Nicolás Esteban
Formato: Articulo
Lenguaje:Inglés
Publicado: 2009
Materias:
Ciencias Exactas
Física
Pomeranchuk instabilities
graphene
phase diagram
Fermi-liquid
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/126373
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-126373
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
Pomeranchuk instabilities
graphene
phase diagram
Fermi-liquid
spellingShingle Ciencias Exactas
Física
Pomeranchuk instabilities
graphene
phase diagram
Fermi-liquid
Lamas, Carlos Alberto
Cabra, Daniel Carlos
Grandi, Nicolás Esteban
Generalized Pomeranchuk instabilities in graphene
topic_facet Ciencias Exactas
Física
Pomeranchuk instabilities
graphene
phase diagram
Fermi-liquid
description We study the presence of Pomeranchuk instabilities induced by interactions on a Fermi-liquid description of a graphene layer. Using a recently developed generalization of the Pomeranchuk method, we present a phase diagram in the space of fillings versus on-site and nearest-neighbors interactions. We find that for both interactions being repulsive, an instability region exists near the Van Hove filling, in agreement with earlier theoretical work. In contrast, near-half filling, the Fermi-liquid behavior appears to be stable, in agreement with theoretical results and experimental findings using angle-resolved photoemission spectroscopy. The method allows for a description of the phase diagram for arbitrary filling.
format Articulo
Articulo
author Lamas, Carlos Alberto
Cabra, Daniel Carlos
Grandi, Nicolás Esteban
author_facet Lamas, Carlos Alberto
Cabra, Daniel Carlos
Grandi, Nicolás Esteban
author_sort Lamas, Carlos Alberto
title Generalized Pomeranchuk instabilities in graphene
title_short Generalized Pomeranchuk instabilities in graphene
title_full Generalized Pomeranchuk instabilities in graphene
title_fullStr Generalized Pomeranchuk instabilities in graphene
title_full_unstemmed Generalized Pomeranchuk instabilities in graphene
title_sort generalized pomeranchuk instabilities in graphene
publishDate 2009
url http://sedici.unlp.edu.ar/handle/10915/126373
work_keys_str_mv AT lamascarlosalberto generalizedpomeranchukinstabilitiesingraphene
AT cabradanielcarlos generalizedpomeranchukinstabilitiesingraphene
AT grandinicolasesteban generalizedpomeranchukinstabilitiesingraphene
bdutipo_str Repositorios
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