METAL-INSULATOR-TRANSITION IN C-60 POLYMERS

被引：26

作者：

HARIGAYA, K

机构：

[1] Fundamental Physics Section, Electrotechnical Laboratory, Tsukuba, Ibaraki 305

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.52.7968

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Variations in the band structures of C-60 polymers are studied, when pi-conjugation conditions are changed. We discuss a metal-insulator transition, using a semiempirical model with the Su-Schrieffer-Heeger-type electron-phonon interactions. We find that electronic structures change among direct-gap insulators and the metal, depending on the degree of pi conjugations. High-pressure experiments could observe such pressure-induced metal-insulator transitions. The transition from one insulator to another insulator is reentrant, and is specific to the C-60-polymer system.

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页码：7968 / 7971

页数：4

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