Spin dynamics of the spin ladder system Sr14Cu24O41

被引：3
|
作者：
Regnault, LP
Moudden, AH
Boucher, JP
Lorenzo, E
Hiess, A
Vietkin, A
Revcolevschi, A
机构：
[1] CEA, MDN, DRFMC,Ctr Etudes Nucl Grenoble, Dept Rech Fondamentale Matiere Condensee, F-38054 Grenoble 9, France
[2] CEA, CNRS, Leon Brillouin Lab, F-91191 Gif Sur Yvette, France
[3] UJF, Spectrometrie Phys Lab, F-38042 St Martin Dheres, France
[4] CNRS, Cristallog Lab, F-38042 Grenoble, France
[5] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
[6] UPS, CNRS, Chim Solide Lab, F-91405 Orsay, France
来源：
PHYSICA B-CONDENSED MATTER | 1999年 / 259-61卷
关键词：
spin ladders; inelastic neutron scattering; spin dynamics;
D O I：
10.1016/S0921-4526(98)00874-6
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Detailed inelastic neutron scattering studies of the spin dynamics in the spin ladder system Sr14Cu24O41 has been performed. We confirm the existence of a spin gap in the ladders as reported earlier in NMR and pulsed neutron work on polycrystalline samples. Using large single crystals, we studied separately the spin excitations of the chain and the ladder subsystems. For the ladders, we clearly show that the inter-ladder coupling is extremely weak and the dispersion relation of the spin dynamics is essentially quasi-ID and remarkably steep. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：1038 / 1039
页数：2
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