IFIR 05409
INSTITUTO DE FISICA DE ROSARIO
Unidad Ejecutora - UE
artículos
Título:
Magnons and excitation continuum in XXZ triangular antiferromagnetic model: Application to Ba3CoSb2O9
Autor/es:
GHIOLDI, ESTEBAN A.; MEZIO, ALEJANDRO; MANUEL, LUIS O.; SINGH, RAJIV R. P.; OITMAA, JAN; TRUMPER, ADOLFO E.
Revista:
PHYSICAL REVIEW B
Editorial:
AMER PHYSICAL SOC
Referencias:
Lugar: New York; Año: 2015 vol. 91 p. 134423 - 134423
ISSN:
1098-0121
Resumen:
We investigate the excitation spectrum of the triangular-lattice antiferromagnetic XXZ model using series expansion and mean field Schwinger boson approaches. The single-magnon spectrum computed with series expansion exhibits rotonic minima at the middle points of the edges of the Brillouin zone, for all values of the anisotropy parameter in the range 0
