Artículo
Correlated Partial Disorder in a Weakly Frustrated Quantum Antiferromagnet
Gonzalez, Matías Gabriel
; Lisandrini, Franco Thomas
; Blesio, Germán Gabriel
; Trumper, Adolfo Emilio
; Gazza, Claudio Javier
; Manuel, Luis Oscar
Fecha de publicación:
01/2019
Editorial:
American Physical Society
Revista:
Physical Review Letters
ISSN:
0031-9007
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Partial disorder - the microscopic coexistence of long-range magnetic order and disorder - is a rare phenomenon that has been experimentally and theoretically reported in some Ising- or easy plane-spin systems, driven by entropic effects at finite temperatures. Here, we present an analytical and numerical analysis of the S=1/2 Heisenberg antiferromagnet on the 3×3-distorted triangular lattice, which shows that its quantum ground state has partial disorder in the weakly frustrated regime. This state has a 180° Néel ordered honeycomb subsystem coexisting with disordered spins at the hexagon center sites. These central spins are ferromagnetically aligned at short distances, as a consequence of a Casimir-like effect originated by the zero-point quantum fluctuations of the honeycomb lattice.
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Articulos(IFIR)
Articulos de INST.DE FISICA DE ROSARIO (I)
Articulos de INST.DE FISICA DE ROSARIO (I)
Citación
Gonzalez, Matías Gabriel; Lisandrini, Franco Thomas; Blesio, Germán Gabriel; Trumper, Adolfo Emilio; Gazza, Claudio Javier; et al.; Correlated Partial Disorder in a Weakly Frustrated Quantum Antiferromagnet; American Physical Society; Physical Review Letters; 122; 1; 1-2019; 1-6
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