Artículo
Anisotropic frustrated Heisenberg model on the honeycomb lattice
Kalz, Ansgar; Arlego, Marcelo José Fabián
; Cabra, Daniel Carlos
; Honecker, Andreas; Rossini, Gerardo Luis
Fecha de publicación:
03/2012
Editorial:
American Physical Society
Revista:
Physical Review B: Condensed Matter and Materials Physics
ISSN:
1098-0121
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We investigate the ground-state phase diagram of an anisotropic Heisenberg model on the honeycomb lattice with competing interactions. We use quantum Monte Carlo simulations, as well as linear spin-wave and Ising series expansions, to determine the phase boundaries of the ordered magnetic phases. We find a region without any classical order in the vicinity of a highly frustrated point. Higher-order correlation functions in this region give no signal for long-range valence-bond order. The low-energy spectrum is derived via exact diagonalization to check for topological order on small-size periodic lattices. © 2012 American Physical Society.
Palabras clave:
Quantum
,
Magnetism
,
Frustration
,
Anisotropy
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Articulos(IFLP)
Articulos de INST.DE FISICA LA PLATA
Articulos de INST.DE FISICA LA PLATA
Citación
Kalz, Ansgar; Arlego, Marcelo José Fabián; Cabra, Daniel Carlos; Honecker, Andreas; Rossini, Gerardo Luis; Anisotropic frustrated Heisenberg model on the honeycomb lattice; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 85; 10; 3-2012; 104505-104514
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