Magnon hole scattering in (Sr, Ca, La)14Cu24O41

被引：15

作者：

Hess, C

Ammerahl, U

Baumann, C

Büchner, B

Revcolevschi, A

机构：

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

[2] Rhein Westfal TH Aachen, Inst Phys 2, D-52056 Aachen, Germany

[3] Univ Paris 11, Lab Physicochim, F-01405 Orsay, France

来源：

PHYSICA B-CONDENSED MATTER | 2002年 / 312卷

关键词：

one-dimensional spin systems; magnon heat transport; spin ladder systems;

D O I：

10.1016/S0921-4526(01)01287-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have investigated the one-dimensional magnon heat transport of the spin ladder system (Sr, Ca, La)(14)Cu24O41. Along the ladder direction in all compounds heat conduction is dominated by magnon heat conduction which in some cases exceeds the phonon heat conduction by almost two orders of magnitude. Isovalent as well as trivalent doping strongly affect the magnon heat transport: Large magnon heat conduction is observed as long as charges are localized whereas it is effectively suppressed if charges become mobile as a function of temperature and/or doping. (C) 2002 Elsevier Science B.V. All rights reserved.

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页码：612 / 613

页数：2

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