Development of Spin Correlations in the Geometrically Frustrated Triangular-Lattice Heisenberg Antiferromagnet CuCrO2

被引:10
作者
Kajimoto, Ryoichi [1 ,2 ]
Tomiyasu, Keisuke [3 ]
Nakajima, Kenji [2 ]
Ohira-Kawamura, Seiko [2 ]
Inamura, Yasuhiro [2 ]
Okuda, Tetsuji [4 ]
机构
[1] CROSS, Res Ctr Neutron Sci & Technol, Tokai, Ibaraki 3191106, Japan
[2] Japan Atom Energy Agcy, J PARC Ctr, Tokai, Ibaraki 3191195, Japan
[3] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan
[4] Kagoshima Univ, Dept Nanostruct & Adv Mat, Kagoshima 8900065, Japan
关键词
EXCITATIONS; MAGNET;
D O I
10.7566/JPSJ.84.074708
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Magnetic excitations in the triangular-lattice Heisenberg antiferromagnet CuCrO2 were studied using single-crystal inelastic neutron scattering. A diffusive quasielastic component that persisted without developing a correlation length over a wide temperature range both below and above the ordering temperature was observed. Furthermore, characteristic momentum dependence was observed that was reproduced using minimum spin clusters. The robust spin clusters contrast with conventional magnetic ordering and may be universal in triangular-lattice Heisenberg antiferromagnets.
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页数:6
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