STRONGLY CORRELATED ELECTRONS IN MIXED-VALENCE CONDUCTORS DCNQI-CU SALTS

被引：12

作者：

SUZUMURA, Y ^{[1
]}

ONO, Y ^{[1
]}

机构：

[1] NAGOYA UNIV, DEPT PHYS, NAGOYA 46401, JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1993年 / 62卷 / 09期

关键词：

D O I：

10.1143/JPSJ.62.3244

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Organic conductors, DCNQI-Cu salts, with a mixed valence Cu+4/3 on the average has been studied theoretically by applying the slave-boson method to the strongly correlated systems which consist of pi-electrons of DCNQI molecule and d-electrons of Cu atoms. The ground state is calculated by use of the 1/N(sigma) expansion method which treats the local constraint strictly. It is shown that the electron mass around the Fermi surface is enhanced in the presence of the charge density with the three-fold periodicity.

引用

页码：3244 / 3256

页数：13

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