Are there bipolarons in icosahedral boron-rich solids?

被引：40

作者：

Werheit, H. ^{[1
]}

机构：

[1] Univ Duisburg Essen, Inst Phys, D-47048 Duisburg, Germany

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2007年 / 19卷 / 18期

关键词：

D O I：

10.1088/0953-8984/19/18/186207

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The charge transport of boron carbide, often incorrectly denoted as B4C, has been controversially discussed. It is shown that the bipolaron hypothesis is not compatible with numerous experimental results. In particular, the determined real microstructure of boron carbide and its related electronic properties disprove several assumptions, which are fundamental to the bipolaron hypothesis. In contrast, the actual energy band scheme derived mainly from optical investigations is confirmed by careful evaluation of the high-temperature electrical conductivity, and allows a consistent description at most of the experimental results.

引用

页数：14

共 52 条

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[Anonymous], ENCY PHYS

[2]

[Anonymous], 1986, AIP CONF P

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