MAGNETIC-SUSCEPTIBILITY OF DOPED POLYACETYLENE

被引：132

作者：

WEINBERGER, BR ^{[1
]}

KAUFER, J ^{[1
]}

HEEGER, AJ ^{[1
]}

PRON, A ^{[1
]}

MACDIARMID, AG ^{[1
]}

机构：

[1] UNIV PENN,RES STRUCT MATTER LAB,PHILADELPHIA,PA 19104

来源：

PHYSICAL REVIEW B | 1979年 / 20卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.20.223

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic susceptibility measurements of [CH(AsF5)y]x over the concentration range 0<y<0.13 and the temperature range 77-295 K are presented. Measurements were performed using both Faraday balance and Schumacher-Slichter magnetic resonance methods. Total susceptibilities were separated into three components: atomic core diamagnetism, local-moment Curie-law paramagnetism, and Pauli paramagnetism. From the onset of the Pauli term as a function of (AsF5) concentration, the critical dopant concentration for the semiconductormental transition is determined. The Fermi-surface density of states obtained from the Pauli term is analyzed in terms of various band-structure models. Alternate explanations of anomalously small Curie terms in lightly doped, semiconducting (CH)x are discussed, including the possibility of soliton-localized impurity states induced by charge transfer doping. © 1979 The American Physical Society.

引用

页码：223 / 230

页数：8

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