Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/34797
Título: Non-conserved magnetization operator and ‘fire-and-ice’ ground states in the Ising-Heisenberg diamond chain
Palavras-chave: Low-dimensional quantum magnetism
Magnetization plateaus
Molecular magnets
Negative g-factors
Data do documento: Mai-2018
Editor: Elsevier
Citação: TORRICO, J.; OHANYAN, V.; ROJAS, O. Non-conserved magnetization operator and ‘fire-and-ice’ ground states in the Ising-Heisenberg diamond chain. Journal of Magnetism and Magnetic Materials, [S.l.], v. 454, p. 85-96, May 2018.
Resumo: We consider the diamond chain with S = 1/2 XYZ vertical dimers which interact with the intermediate sites via the interaction of the Ising type. We also suppose all four spins form the diamond-shaped plaquette to have different g-factors. The non-uniform g-factors within the quantum spin dimer as well as the XY-anisotropy of the exchange interaction lead to the non-conserving magnetization for the chain. We analyze the effects of non-conserving magnetization as well as the effects of the appearance of negative g-factors among the spins from the unit cell. A number of unusual frustrated states for ferromagnetic couplings and g-factors with non-uniform signs are found out. These frustrated states generalize the “half-fire-half-ice” state introduced in reference Yin et al. (2015). The corresponding zero-temperature ground state phase diagrams are presented.
URI: https://www.sciencedirect.com/science/article/pii/S0304885317335400
http://repositorio.ufla.br/jspui/handle/1/34797
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