Anomalous electronic behaviour of Na superfullerides: Theory and experiment

被引：36

作者：

Andreoni, W

Giannozzi, P

Armbruster, JF

Knupfer, M

Fink, J

机构：

[1] SCUOLA NORMALE SUPER PISA, I-56126 PISA, ITALY

[2] IST NAZL FIS NUCL, I-56126 PISA, ITALY

[3] FORSCHUNGSZENTRUM KARLSRUHE, INST NUKL FESTKORPERPHYS, D-76021 KARLSRUHE, GERMANY

[4] IFW DRESDEN, INST FESTKORPERFORSCH, D-01171 DRESDEN, GERMANY

来源：

EUROPHYSICS LETTERS | 1996年 / 34卷 / 09期

关键词：

D O I：

10.1209/epl/i1996-00517-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Theory and experiment on NaxC60 agree that there is an anomalous trend as well as a limitation in the charge transfer from the sodiums to C-60, for x > 6. As revealed by both ab initio calculations and electron energy loss spectroscopy, the origin lies in the formation of interstitial states that trap a part of the excess electrons and that are neither C-60- nor sodium-derived. This may well be a general characteristic of heavily doped intercalated fullerides and other cluster-based solid compounds.

引用

页码：699 / 704

页数：6