Spin waves and magnetic ordering in the quasi-one-dimensional S=1/2 antiferromagnet BaCu2Si2O7 -: art. no. 054422

被引：51

作者：

Kenzelmann, M

Zheludev, A

Raymond, S

Ressouche, E

Masuda, T

Böni, P

Kakurai, K

Tsukada, I

Uchinokura, K

Coldea, R

机构：

[1] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England

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

[3] CEA Grenoble, DRFMC, SPSMS, MDN, F-38054 Grenoble, France

[4] CENG, DRFMC, SPSMS, MDN, F-38054 Grenoble, France

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

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

[7] Swiss Fed Inst Technol, Neutron Scattering Lab, CH-5232 Villigen, Switzerland

[8] PSI, CH-5232 Villigen, Switzerland

[9] Univ Tokyo, Inst Solid State Phys, Neutron Scattering Lab, Tokai, Ibaraki 3191106, Japan

[10] Cent Res Inst Elect Power Ind, Komae, Tokyo 2018511, Japan

[11] Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA

[12] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

来源：

PHYSICAL REVIEW B | 2001年 / 64卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.64.054422

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Elastic and inelastic neutron scattering were used to study the ordered phase of the quasi-one-dimensional spin-1/2 antiferromagnet BaCu2Si2O7. The previously proposed model for the low-temperature magnetic structure was confirmed. Spin-wave dispersion along several reciprocal-space directions was measured and interchain, as well as in-chain exchange constants were determined. A small gap in the spin-wave spectrum was observed and attributed to magnetic anisotropy effects. The results are discussed in comparison with existing theories for weakly coupled quantum spin chain antiferromagnets.

引用

页数：7

共 18 条

[1]

[Anonymous], 1962, PHYS REV, DOI DOI 10.1103/PHYSREV.128.2131

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