Thermal conductivity of the spin-Peierls compound CuGeO3

被引：77

作者：

Ando, Y

Takeya, J

Sisson, DL

Doettinger, SG

Tanaka, I

Feigelson, RS

Kapitulnik, A

机构：

[1] Cent Res Inst Elect Power Ind, Komae, Tokyo 201, Japan

[2] Stanford Univ, Edward L Ginzton Lab, Stanford, CA 94305 USA

[3] Stanford Univ, Ctr Mat Res, Stanford, CA 94305 USA

[4] Yamanashi Univ, Fac Engn, Inst Inorgan Synth, Kofu, Yamanashi 400, Japan

来源：

PHYSICAL REVIEW B | 1998年 / 58卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.58.R2913

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The thermal conductivity kappa of the spin-Peierls (SP) compound CuGeO3 was measured in magnetic fields up to 16 T. Above the SP transition, the heat transport due to spin excitations causes a peak ar similar to 22 K, while below the transition the spin excitations rapidly diminish and the heat transport is dominated by phonons; however, the main scattering process of the phonons is with spin excitations, which demonstrates itself in an unusual peak in kappa at similar to 5.5 K. This low-temperature peak is strongly suppressed with magnetic fields in excess of 12.5 T.

引用

页码：R2913 / R2916

页数：4

共 24 条

[1]

ABRIKOSOV AA, 1988, FUNDAMENTALS THEORY, P350

[2]

Berman R., 1976, THERMAL CONDUCTION S, P77

[3] Incommensurate phase of the pure and doped spin-Peierls system CuGeO3 [J].