Field-induced order-disorder transition in antiferromagnetic BaCo(2)V(2)O(8) driven by a softening of spinon excitation.
Field-induced order-disorder transition in antiferromagnetic BaCo(2)V(2)O(8) driven by a softening of spinon excitation.
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DOI：
10.1103/physrevlett.99.087602
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发表时间：
2007-08
影响因子：
8.6
通讯作者：
S. Kimura;H. Yashiro;K. Okunishi;M. Hagiwara;Zhangzhen He;K. Kindo;T. Taniyama;M. Itoh
中科院分区：
文献类型：
--
作者：
S. Kimura;H. Yashiro;K. Okunishi;M. Hagiwara;Zhangzhen He;K. Kindo;T. Taniyama;M. Itoh
High field magnetization and ESR measurements on the quasi-one-dimensional (1D) antiferromagnet BaCo(2)V(2)O(8) have been performed in magnetic fields up to 50 T along the chain. The experimental results are explained well in terms of a 1D S=1/2 antiferromagnetic XXZ model in longitudinal fields. We show that the quantum phase transition from the Néel ordered phase to the spin liquid one in the model is responsible for a peculiar order to disorder transition in BaCo(2)V(2)O(8).
