Spin dynamics in the quasi-one-dimensional S=1/2 antiferromagnet BaCu2Si2O7 -: art. no. 014402

被引：33

作者：

Zheludev, A

Kenzelmann, M

Raymond, S

Masuda, T

Uchinokura, K

Lee, SH

机构：

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

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

[3] CENG, DRFMC, SPSM, MDN, F-38054 Grenoble, France

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

[5] Natl Inst Stand & Technol, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.65.014402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Inelastic neutron scattering is used to identify single-particle and continuum spin excitations in the quasi-one-dimensional S = 1/2 antiferromagnet BaCu2Si2O7, In the data analysis, close attention is given to resolution effects, A gap in the continuum spectrum at Delta(c)=4.8(2) meV is directly observed. The gap energy is in excellent agreement with existing theoretical predictions. Below the gap, the spectrum is dominated by sharp acoustic spin-wave excitations.

引用

页码：1 / 9

页数：9

共 24 条

[1]

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

[2]

Bethe H.A., 1931, Z PHYS, V71, P256

[3] LINEAR MAGNETIC CHAINS WITH ANISOTROPIC COUPLING [J].