Magnetic domains and stripes in a spin-fermion model for cuprates
Phys Rev Lett
; 84(12): 2690-3, 2000 Mar 20.
Article
em En
| MEDLINE
| ID: mdl-11017301
ABSTRACT
Monte Carlo simulations applied to a model of interacting fermions and classical spins show the existence of antiferromagnetic spin domains and charge stripes upon hole doping. The stripes have a filling of approximately 1/2 hole per site, and they separate spin domains with a pi phase shift among them. The observed stripes run either along the x or y axes. No particular boundary conditions or external fields are needed to stabilize these structures. When magnetic incommensurate peaks are observed at momentum pi(1,1-delta), charge incommensurate peaks appear at (0,2delta). The charge fluctuations responsible for the stripe formation also induce a pseudogap in the density of states.
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2000
Tipo de documento:
Article