Inelastic light scattering experiments on the coupled spin dimer system Tl1-xKxCuCl3

被引：0
|
作者：
Choi, KY [1 ]
Oosawa, A
Tanaka, H
Lemmens, P
机构：
[1] Tohoku Univ, Mat Res Inst, Sendai, Miyagi 9808577, Japan
[2] Japan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
[3] Tokyo Inst Technol, Res Ctr Low Temp, Tokyo 1528551, Japan
[4] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany
[5] Tech Univ Carolo Wilhelmina Braunschweig, Inst Condensed Matter Phys, D-38106 Braunschweig, Germany
来源：
PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT | 2005年 / 159期
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中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report Raman scattering experiments on the coupled spin dimer system Tl1-xKxCuCl3 (x = 0,0.1 and 1). Qualitatively different magnetic excitations are observed as a function of substitution. TlCuCl3 shows a broadened two-magnon continuum while KCuCl3 exhibits a pronounced three-magnon continuum as well. In contrast, for x = 0.1 a quasielastic scattering shows up. With increasing x phonon anomalies including multi-phonon scattering become pronounced. These features suggest an intriguing interplay between delocalized triplets and lattice degrees of freedom.
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页码：195 / 199
页数：5
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