Influence of charge order on the ground state of TMTTF conductors

被引：11

作者：

Zamborszky, F ^{[1
]}

Yu, W

Raas, W

Brown, SE

Alavi, B

Merlic, CA

Baur, A

Lefebvre, S

Wzietek, P

机构：

[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[2] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[3] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA

[4] Univ Sherbrooke, CERPEMA, Dept Phys, Sherbrooke, PQ J1K 2R1, Canada

[5] Univ Paris 11, Phys Solides Lab, URA 2, CNRS, F-91405 Orsay, France

来源：

JOURNAL DE PHYSIQUE IV | 2002年 / 12卷 / PR9期

关键词：

D O I：

10.1051/jp4:20020380

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Properties of the charge-ordered (CO) phase for the representative salt (TMTTF)(2)AsF6 are determined using C-13 and As-75 nuclei as probes. The charge disproportionation ratio is found to be at least 3:1 at temperatures below the transition temperature T-CO. At lower temperatures, the material undergoes a second transition to a singlet ground state. Investigations of the relative stability of the two orders under applied pressure reveal that the two orders compete. The phase diagram consists of a region of coexistence and a tetracritical point.

引用

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页码：139 / 144

页数：6

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