Phase transitions of the frustrated bilayer spin one XY model

Use este identificador para citar ou linkar para este item: http://hdl.handle.net/1843/54914

Tipo:	Artigo de Periódico
Título:	Phase transitions of the frustrated bilayer spin one XY model
Autor(es):	Antônio Sérgio Teixeira Pires
Resumo:	In this paper we use the SU(3) Schwinger boson representation, followed by a mean field decoupling, to study the disordered phases of the bilayer spin one quantum XY antiferromagnet on a square lattice with next near neighbor and a single ion anisotropy. The phase diagram at zero temperature is obtained. The ratio between the interlayer to the intralayer near neighbor J1 exchange interactions exhibits a quantum phase transition at a critical ratio that separates the small- η Nèel phase from the large η quantum disordered paramagnet. The effect of next near neighbor interactions is discussed. The Neel phase is studied using a self consistent harmonic approximation that takes into account topological effects.
Assunto:	Antiferromagnetismo
Idioma:	eng
País:	Brasil
Editor:	Universidade Federal de Minas Gerais
Sigla da Instituição:	UFMG
Departamento:	ICX - DEPARTAMENTO DE FÍSICA
Tipo de Acesso:	Acesso Restrito
Identificador DOI:	https://doi.org/10.1016/j.jmmm.2017.12.099
URI:	http://hdl.handle.net/1843/54914
Data do documento:	2018
metadata.dc.url.externa:	https://www.sciencedirect.com/science/article/pii/S0304885317330585
metadata.dc.relation.ispartof:	Journal of Magnetism and Magnetic Materials
Aparece nas coleções:	Artigo de Periódico

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