Quantum Spin Liquid in Frustrated One-Dimensional LiCuSbO4

被引：84

作者：

Dutton, S. E. ^{[1
]}

Kumar, M. ^{[1
]}

Mourigal, M. ^{[2
,3
,4
]}

Soos, Z. G. ^{[1
]}

Wen, J. -J. ^{[2
,3
]}

Broholm, C. L. ^{[2
,3
]}

Andersen, N. H. ^{[5
]}

Huang, Q. ^{[6
]}

Zbiri, M. ^{[4
]}

Toft-Petersen, R. ^{[5
]}

Cava, R. J. ^{[1
,5
]}

机构：

[1] Princeton Univ, Dept Chem, Princeton, NJ 08544 USA

[2] Johns Hopkins Univ, Inst Quantum Matter, Baltimore, MD 21218 USA

[3] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[4] Inst Laue Langevin, F-38042 Grenoble 9, France

[5] Tech Univ Denmark, Dept Phys, DK-4000 Roskilde, Denmark

[6] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 18期

关键词：

GROUND-STATE; CHAINS;

D O I：

10.1103/PhysRevLett.108.187206

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A quantum magnet, LiCuSbO4, with chains of edge-sharing spin-1/2 CuO6 octahedra is reported. While short-range order is observed for T < 10 K, no zero-field phase transition or spin freezing occurs down to 100 mK. Specific heat indicates a distinct high-field phase near the 12 T saturation field. Neutron scattering shows incommensurate spin correlations with q = (0.47 +/- 0.01) pi/a and places an upper limit of 70 mu eV on any spin gap. Exact diagonalization of 16-spin easy-plane spin-1/2 chains with competing ferro-and antiferromagnetic interactions (J(1) = -75 K, J(2) = 34 K) accounts for the T > 2 K data.

引用

页数：5

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