Spin-vacancy-induced long-range order in a new haldane-gap antiferromagnet

被引：193

作者：

Uchiyama, Y

Sasago, Y

Tsukada, I

Uchinokura, K

Zheludev, A

Hayashi, T

Miura, N

Böni, P

机构：

[1] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan

[2] Univ Tokyo, Dept Adv Mat Sci, Bunkyo Ku, Tokyo 1138656, Japan

[3] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[4] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 1068666, Japan

[5] ETH Zurich, Neutron Scattering Lab, CH-5232 Villigen, Switzerland

[6] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.83.632

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Magnetic susceptibility, high-field magnetization, and inelastic neutron scattering experiments are used to study the magnetic properties of a new S = 1 quasi-one-dimensional antiferromagnet PbNi2V2O8. Interchain interactions are shown to be almost, but not quite, strong enough to destroy the nonmagnetic singlet ground state and the energy gap in the magnetic excitation spectrum. Substituting nonmagnetic Mg2+ (S = 0) ions for Ni2+ (S = 1) induces a magnetically ordered state at low temperatures. To our knowledge this is the first observation of doping-induced long-range order in a Haldane-gap system.

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页码：632 / 635

页数：4

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