Possibility of field-induced incommensurate order in quasi-one-dimensional frustrated spin system
arXiv:cond-mat/0604194 · doi:10.1088/0953-8984/18/20/006
Abstract
We study an incommensurate long-range order induced by an external magnetic field in a quasi-one-dimensional bond-alternating spin system, F5PNN, focusing on the role of the frustrating interaction which can be enhanced by a high-pressure effect. On the basis of the density matrix renormalization group analysis of a microscopic model for F5PNN, we present several H-T phase diagrams for typical parameters of the frustrating next-nearest-neighbour coupling and the interchain interaction, and then discuss how the field-induced incommensurate order develops by the frustration effect in such phase diagrams. A magnetization plateau at half the saturation moment is also mentioned.
arXiv comment9 pages, 9 figures, submitted to J. Phys.: Condens. Matter
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