Strong damping of phononic heat current by magnetic excitations in SrCu2(BO3)2 -: art. no. 047202

被引：60

作者：

Hofmann, M

Lorenz, T

Uhrig, GS

Kierspel, H

Zabara, O

Freimuth, A

Kageyama, H

Ueda, Y

机构：

[1] Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany

[2] Univ Cologne, Inst Theoret Phys, D-50937 Cologne, Germany

[3] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.87.047202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Measurements of the thermal conductivity as a function of temperature and magnetic field in the 2D dimer spin system SrCu2(BO3)(2) are presented. In zero magnetic field the thermal conductivity along and perpendicular to the magnetic planes shows a pronounced double-peak structure as a function of temperature. The low-temperature maximum is drastically suppressed with increasing magnetic field. Our quantitative analysis reveals that the heat current is due to phonons and that the double-peak structure arises from pronounced resonant scattering of phonons by magnetic excitations.

引用

页码：47202 / 1

页数：4

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