Spin-flop phenomenon of two-dimensional frustrated antiferromagnets without anisotropy in spin space
中野 博生*; 坂井 徹; 長谷川 泰正*
Nakano, Hiroki*; Sakai, Toru; Hasegawa, Yasumasa*
Motivated by a recent finding of a spin-flop phenomenon in a system without anisotropy in spin space reported in the $$S$$ = 1/2 Heisenberg antiferromagnet on the square-kagome lattice, we study the $$S$$ = 1/2 Heisenberg antiferromagnets on two other lattice composed of vertex-sharing triangles using the numerical diagonalization method. One is a novel lattice including a ${it shuriken}$ shape with four teeth; the other is a distorted kagome lattice, which includes a ${it shuriken}$ shape with six teeth. We find in the magnetization processes of these systems that a magnetization jump accompanied by a spin-flop phenomenon occurs at the higher-field-side edge of the magnetization plateau at one-third the height of saturation.
使用言語 : English
掲載資料名 : Journal of the Physical Society of Japan
: 83
: 8
ページ数 : p.084709_1 - 084709_7
発行年月 : 2014/08
出版社名 : 日本物理学会
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登録番号 : AA20140030
抄録集掲載番号 : 42001101
論文投稿番号 : 14745
Accesses  (From Jun. 2, 2014)
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