ANOMALOUS PRESSURE-TEMPERATURE PHASE-DIAGRAM OF THE MOLECULAR CONDUCTOR, (DI-DCNQI)(2)CU (DI-DCNQI=2,5-DIIODO-N,N'-DICYANOQUINONEDIIMINE)

被引：29

作者：

KASHIMURA, Y

SAWA, H

AONUMA, S

KATO, R

TAKAHASHI, H

MORI, N

机构：

[1] The Institute for Solid State Physics, The University of Tokyo, Minato-ku, Tokyo, 106

来源：

SOLID STATE COMMUNICATIONS | 1995年 / 93卷 / 08期

关键词：

ORGANIC CRYSTALS; CRYSTAL STRUCTURE AND SYMMETRY; ELECTRONIC BAND STRUCTURE; ELECTRONIC TRANSPORT; PHASE TRANSITIONS;

D O I：

10.1016/0038-1098(94)00852-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report the temperature-dependent resistivity under pressure up to 22 kbar and the crystal and electronic band structures for the molecular conductor (DI-DCNQI)(2)Cu. In the (DCNQI)(2)Cu system, the application of pressure induces the metal-insulator (M-I) transition. (DI-DCNTQI)(2)Cu shows the highest critical pressure (15.3 kbar). In contrast to previously reported (DCNQI)(2)Cu systems, however, this system turns into metallic state again above 20 kbar. This anomalous phenomenon is discussed in terms of an enhancement of the intercolumn LUMO...LUMO interaction.

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收藏

页码：675 / 679

页数：5

相关论文

共 14 条

[1] A GUIDANCE FOR STABLE METALLIC CONDUCTIVITY IN COPPER-SALTS OF N,N'-DICYANOBENZOQUINONEDIIMINES (DCNQIS) [J].

ERK, P ;

MEIXNER, H ;

METZENTHIN, T ;

HUNIG, S ;

LANGOHR, U ;

VONSCHUTZ, JU ;

WERNER, HP ;

WOLF, HC ;

BURKERT, R ;

HELBERG, HW ;

SCHAUMBURG, G .

ADVANCED MATERIALS, 1991, 3 (06) :311-315

[2] THE ORIGIN OF REENTRANT METALLIC STATE IN (DCNQI)2CU [J].

FUKUYAMA, H .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1993, 62 (05) :1436-1438

[3]

FUKUYAMA H, 1993, PROG THEOR PHYS S, V113, P125

[4] LOW-TEMPERATURE AND HIGH-PRESSURE (1.7K AND 7 102 MPA) STRUCTURE OF THE 1ST SUPERCONDUCTING ORGANIC SALT (TMTSF)2PF6 [J].

GALLOIS, B ;

GAULTIER, J ;

BECHTEL, F ;

FILHOL, A ;

VETTIER, C .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1987, 148 :279-293

[5] COPPER VALENCE FLUCTUATION IN THE ORGANIC CONDUCTOR (DIMETHYL-N,N'-DICYANOQUINONEDIIMINE)2CU STUDIED BY X-RAY PHOTOEMISSION SPECTROSCOPY [J].

INOUE, IH ;

KAKIZAKI, A ;

NAMATAME, H ;

FUJIMORI, A ;

KOBAYASHI, A ;

KATO, R ;

KOBAYASHI, H .

PHYSICAL REVIEW B, 1992, 45 (11) :5828-5833

[6]

KASHIMURA Y, UNPUB

[7] CRYSTAL AND ELECTRONIC-STRUCTURES OF CONDUCTIVE ANION-RADICAL SALTS, (2,5-R1,R2-DCNQI)2CU (DCNQI = N,N'-DICYANOQUINONEDIIMINE - R1, R2 = CH3, CH3O, CL, BR) [J].

KATO, R ;

KOBAYASHI, H ;

KOBAYASHI, A .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1989, 111 (14) :5224-5232

[8] REENTRANT BEHAVIOR IN THE PRESSURE-TEMPERATURE DEPENDENCE OF THE RESISTIVITY OF (DMEO-DCNQI)2CU [J].

KOBAYASHI, H ;

MIYAMOTO, A ;

KATO, R ;

KOBAYASHI, A ;

NISHIO, Y ;

KAJITA, K ;

SASAKI, W .

SOLID STATE COMMUNICATIONS, 1989, 72 (01) :1-5

[9] MIXED VALENCY OF CU, ELECTRON-MASS ENHANCEMENT, AND 3-DIMENSIONAL ARRANGEMENT OF MAGNETIC SITES IN THE ORGANIC CONDUCTORS (R1, R2-N, N'-DICYANOQUINONEDIIMINE)2CU (WHERE R1, R2=CH3,CH3O,CL,BR) [J].

KOBAYASHI, H ;

MIYAMOTO, A ;

KATO, R ;

SAKAI, F ;

KOBAYASHI, A ;

YAMAKITA, Y ;

FURUKAWA, Y ;

TASUMI, M ;

WATANABE, T .

PHYSICAL REVIEW B, 1993, 47 (07) :3500-3516

[10] PRESSURE-INDUCED ONE-DIMENSIONAL INSTABILITY IN (DMDCNQI)2CU [J].

MORI, T ;

IMAEDA, K ;

KATO, R ;

KOBAYASHI, A ;

KOBAYASHI, H ;

INOKUCHI, H .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1987, 56 (10) :3429-3431