Magnetic excitations in a single crystal of the Kondo semiconductor YbB12

被引：19

作者：

Iga, F ^{[1
]}

Bouvet, A

Regnault, LP

Takabatake, T

Hiess, A

Kasuya, T

机构：

[1] Hiroshima Univ, ADSM, Higashihiroshima 7398526, Japan

[2] CEA, DRFMC, SPSMS, MDN, F-38054 Grenoble 9, France

[3] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

[4] Tohoku Univ, Fac Sci, Sendai, Miyagi 9810845, Japan

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1999年 / 60卷 / 8-9期

关键词：

magnetic materials; crystal growth; neutron scattering; electronic structure; magnetic properties;

D O I：

10.1016/S0022-3697(99)00081-5

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Inelastic neutron-scattering measurements have been performed on a single crystal of the Kondo semiconductor YbB12 by using a triple-axis spectrometer. We have found two magnetic excitations; one is dispersive from 14 to 20 meV and the other centered at 37 meV is less dispersive. The excitation energy of the former agrees with the gap energy derived from the specific heat and transport measurements. With increasing temperature, both excitations disappear at 60 K, above which a quasi-elastic peak and another peak centered around 25 meV appear. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：1193 / 1196

页数：4

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