Molecular dynamics of C-60 in superconducting Na2CsC60

被引：9

作者：

Cristofolini, L

Vavekis, K

Prassides, K

Dianoux, AJ

Kosaka, M

Hirosawa, I

Tanigaki, K

机构：

[1] INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE 9,FRANCE

[2] NEC CORP LTD,FUNDAMENTAL RES LABS,TSUKUBA,IBARAKI 305,JAPAN

来源：

PHYSICA B | 1996年 / 226卷 / 1-3期

关键词：

D O I：

10.1016/0921-4526(96)00245-1

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have measured the low-energy inelastic neutron scattering spectra of superconducting Na2CsC60 in the temperature range 100-350 K. Well-defined librational peaks are observed at 2.7(1) meV; their position and width are temperature independent. They survive well above the order-disorder transition at 299 K. A quasielastic feature with a width 1.03(6) meV at an average scattering vector of 1.09 Angstrom(-1) is observed at 350 K, arising from diffusive motion of the C-60(3-) ions. Evidence is found for influence of the Na+ ions on the rotational motion of the C-60(3-) ions.

引用

页码：41 / 45

页数：5

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