Publicação: Effect of a magnetic field in an S=1 antiferromagnetic chain with single-ion anisotropy and alternating bonds with disorder
Carregando...
Data
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Tipo
Artigo
Direito de acesso
Resumo
this study, we investigated the quantization of magnetization at low temperatures in a spin-1 antiferromagnetic chain with single-ion anisotropy by considering the quenched disorder in alternating bonds. Each spin i interacts with its nearest neighbors via J(i) and alpha J(i) couplings, where J(i) is considered to obey a Gaussian or Bernoulli probability distribution function, with width sigma. Zero temperature phase diagrams were obtained by minimizing the energy of the Hamiltonian. For finite temperatures, a transfer matrix technique was applied in order to treat the partition function. Consequently, the magnetization curve calculated by deriving the quenched average of the free energy exhibited interesting plateaus, which were modified when randomness was considered. Experimentally, these plateaus appear when some chain structures are subjected to a magnetic field.
Descrição
Palavras-chave
Low-dimensional system, Super-lattice chain, Single-ion anisotropy, Magnetization plateau
Idioma
Inglês
Como citar
Journal Of Physics And Chemistry Of Solids. Oxford: Pergamon-elsevier Science Ltd, v. 152, 10 p., 2021.
