ROTATIONAL-DYNAMICS OF C-60(4-) AND ELECTRONIC EXCITATION IN RB4C60

被引：39

作者：

ZIMMER, G ^{[1
]}

MEHRING, M ^{[1
]}

GOZE, C ^{[1
]}

RACHDI, F ^{[1
]}

机构：

[1] UNIV MONTPELLIER 2,DYNAM PHASES CONDENSEES GRP,F-34095 MONTPELLIER,FRANCE

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.52.13300

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

10% C-13 enriched Rb4C60 was investigated by C-13 NMR. The relaxation rates T-1(-1) and T-2(-1) are basically determined by reorientation of the C-60(4-) molecules. In addition, T-1(-1) exhibits an activated electronic contribution with activation energy 104 meV. The same activation energy is also found in Knight-shift measurements. Both compounds, Rb4C60 and K4C60, exhibit the same electronic excitation with the same activation energy within experimental error. We attribute this to a local excitation into a high-spin state of the Jahn-Teller distorted C-60(4-).

引用

页码：13300 / 13305

页数：6

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