Incommensurate antiferromagnetic order in the S=1/2 quantum chain compound LiCuVO4

被引：118

作者：

Gibson, B. J. ^{[1
]}

Kremer, R. K. ^{[1
]}

Prokofiev, A. V. ^{[2
]}

Assmus, W. ^{[2
]}

McIntyre, G. J. ^{[3
]}

机构：

[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

[2] Goethe Univ Frankfurt, Inst Phys, D-60054 Frankfurt, Germany

[3] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

来源：

PHYSICA B-CONDENSED MATTER | 2004年 / 350卷 / 1-3期

关键词：

Incommensurate afm order; Quantum chain compound; Neutron diffraction; Heat capacity;

D O I：

10.1016/j.physb.2004.03.064

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The linear spin chain (S = 1/2) compound LiCuVO4 was investigated by elastic neutron diffraction, susceptibility and heat-capacity measurements on single crystals. Long-range incommensurate magnetic ordering with a propagation vector k = (0,0.532,0) is observed below 2.1(1)K by elastic neutron diffraction. The refinement of the magnetic structure indicates that the Cu2+ moments lie within the ab-plane, to enclose an angle of similar to 90 degrees to each other along the chain, and have a magnitude of 0.31(1)mu(B). These findings are attributed to the competition of nearest-and next-nearest-neighbour exchange coupling in the edge-sharing CuO2 chains. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：E253 / E256

页数：4

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