Artículo
Field-induced multiple order-by-disorder state selection in an antiferromagnetic honeycomb bilayer lattice
Fecha de publicación:
03/2016
Editorial:
American Physical Society
Revista:
Physical Review B: Condensed Matter and Materials Physics
ISSN:
1098-0121
e-ISSN:
2469-9969
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In this paper we present a detailed study of the antiferromagnetic classical Heisenberg model on a bilayer honeycomb lattice in a highly frustrated regime in the presence of a magnetic field. This study shows strong evidence of entropic order-by-disorder selection in different sectors of the magnetization curve. For antiferromagnetic couplings J1=Jx=Jp/3, we find that at low temperatures there are two different regions in the magnetization curve selected by this mechanism with different number of soft and zero modes. These regions present broken Z2 symmetry and are separated by a not fully collinear classical plateau at M=1/2. At higher temperatures, there is a crossover from the conventional paramagnet to a cooperative magnet. Finally, we also discuss the low-temperature behavior of the system for a less frustrated region, J1=Jx.
Palabras clave:
ORDER BY DISORDER
,
DIMERS
,
FRUSTRATION
,
MONTE CARLO
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IFLP)
Articulos de INST.DE FISICA LA PLATA
Articulos de INST.DE FISICA LA PLATA
Citación
Gómez Albarracín, Flavia Alejandra; Rosales, Héctor Diego; Field-induced multiple order-by-disorder state selection in an antiferromagnetic honeycomb bilayer lattice; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 93; 14; 3-2016; 1-11
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