English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/110201
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Chiral phases of two-dimensional hard-core bosons with frustrated ring exchange

AutorHuerga, Daniel ; Dukelsky, Jorge ; Laflorencie, Nicolas; Ortiz, Gerardo
Fecha de publicación2014
EditorAmerican Institute of Physics
CitaciónPhysical Review B - Condensed Matter and Materials Physics 89: 094401 (2014)
ResumenWe study the zero-temperature phase diagram of two-dimensional hard-core bosons on a square lattice with nearest-neighbor and plaquette (ring-exchange) hoppings, at arbitrary densities, by means of a hierarchical mean-field theory. In the frustrated regime, where quantum Monte Carlo suffers from a sign problem, we find a rich phase diagram where exotic states with nonzero chirality emerge. Among them, novel insulating phases, characterized by nonzero bond-chirality and plaquette order, are found over a large region of the parameter space. In the unfrustrated regime, the hierarchical mean-field approach improves over the standard mean-field treatment as it is able to capture the transition from a superfluid to a valence bond state upon increasing the strength of the ring-exchange term, in qualitative agreement with quantum Monte Carlo results. © 2014 American Physical Society.
Descripción17 págs. ; 16 figs. ; 2 apps. ; PACS number(s): 05.30.Jp, 75.10.Jm, 64.70.Tg
URIhttp://hdl.handle.net/10261/110201
DOI10.1103/PhysRevB.89.094401
Identificadoresdoi: 10.1103/PhysRevB.89.094401
issn: 1098-0121
Aparece en las colecciones: (CFMAC-IEM) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
DHuerga.pdf1,51 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.