Evidence for a large magnetic heat current in insulating layered cuprates -: art. no. 184502

被引：37

作者：

Hofmann, M ^{[1
]}

Lorenz, T

Berggold, K

Grüninger, M

Freimuth, A

Uhrig, GS

Brück, E

机构：

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

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

[3] Univ Amsterdam, Van Der Waals Zeeman Lab, NL-1018 XE Amsterdam, Netherlands

来源：

PHYSICAL REVIEW B | 2003年 / 67卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.67.184502

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The in-plane thermal conductivity k of the two-dimensional antiferromagnetic monolayer cuprate Sr2CuO2Cl2 is studied. Analysis of the unusual temperature dependence of k reveals that at low temperatures the heat is carried by phonons, whereas at high temperatures magnetic excitations contribute significantly. A comparison with other insulating layered cuprates suggests that a large magnetic contribution to the thermal conductivity is an intrinsic property of these materials.

引用

页数：5

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