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Possibility of field-induced incommensurate order in quasi-one-dimensional frustrated spin system

Nobuya Maeshima·Kouichi Okunishi·Kiyomi Okamoto·Tôru Sakai·Kenji Yonemitsu
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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.

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Nobuya Maeshima, Kouichi Okunishi, Kiyomi Okamoto, Tôru Sakai, Kenji Yonemitsu. 2006-04-07. Possibility of field-induced incommensurate order in quasi-one-dimensional frustrated spin system. https://doi.org/10.1088/0953-8984%2F18%2F20%2F006

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