Magnetic Phase Transition and Magnetization Plateau in Cs2CuBr4 | Zendy

Hidekazu Tanaka | Zendy; Toshio Ono | Zendy; Hiroko Aruga Katori | Zendy; Hiroyuki Mitamura | Zendy; Fumihiro Ishikawa | Zendy; Tsuneaki Goto | Zendy

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Magnetic Phase Transition and Magnetization Plateau in Cs₂CuBr₄

Author(s) -

Hidekazu Tanaka,

Toshio Ono,

Hiroko Aruga Katori,

Hiroyuki Mitamura,

Fumihiro Ishikawa,

Tsuneaki Goto

Publication year - 2002

Publication title -

progress of theoretical physics supplement

Language(s) - English

Resource type - Journals

ISSN - 0375-9687

DOI - 10.1143/ptps.145.101

Subject(s) - magnetization , condensed matter physics , plateau (mathematics) , phase transition , saturation (graph theory) , magnetic field , chemistry , materials science , physics , mathematical analysis , mathematics , quantum mechanics , combinatorics

The crystal structure of Cs$_2$CuBr$_4$ is the same as that ofCs$_2$CuCl$_4$, which has been characterized as a spin-1/2quasi-two-dimensional frustrated system. The magnetic properties ofCs$_2$CuBr$_4$ were investigated by magnetization and specific heatmeasurements. The phase transition at zero magnetic field was detected at$T_{\rm N}=1.4$ K. It was observed that the magnetization curve has a plateauat about one-third of the saturation magnetization for magnetic field $H$parallel to the $b$- and $c$-axes, while no plateau was observed for$H\parallel a$. The field-induced phase transition to the plateau state appearsto be of the first order. The mechanism leading to the magnetization plateau isdiscussed.Comment: 6 pages, 4 figures, 4 eps files, ptptex, will appear in Supplement of Progress in Theoretical Physic

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