Study of hybridization gap in the Kondo insulator CeRhAs through inelastic neutron scattering

被引：8

作者：

Adroja, D. T. ^{[1
]}

Park, J. -G.

McEwen, K. A.

Shigetoh, K.

Sasakawa, T.

Takabatake, T.

So, J. -Y.

机构：

[1] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

[2] Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea

[3] Sungkyunkwan Univ, Inst Basic Sci, Suwon 440746, South Korea

[4] UCL, Dept Phys & Astron, London WC1E 6BT, England

[5] Hiroshima Univ, ADSM, Dept Quantum Matter, Higashihiroshima 7398530, Japan

[6] Seoul Natl Univ, Ctr Strongly Correlated Mat Res, Seoul 151747, South Korea

来源：

PHYSICA B-CONDENSED MATTER | 2006年 / 378-80卷 / 788-790期

关键词：

Kondo insulator; inelastic neutron scattering; spin gap formations; CeRhAs;

D O I：

10.1016/j.physb.2006.01.478

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have carried out inelastic neutron scattering measurements on a Kondo insulator CeRhAs over a wide energy range. Our low-energy studies with an incident energy of E-i = 20 meV do not show any evidence of magnetic scattering below 20 meV. On the other hand, measurements done with E-i = 500 meV exhibit a spin gap of 150 meV. The spin gap energy of 150 meV we found appears to be consistent with the Kondo temperature of similar to 1530K estimated from bulk susceptibility. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：788 / 790

页数：3

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