Re-integerization of fractional charges in the correlated quarter-filled band

被引：14

作者：

Clay, RT ^{[1
]}

Mazumdar, S

Campbell, DK

机构：

[1] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA

[2] Univ Arizona, Japan Sci & Technol Corp, Cooperat Excitat Project, ERATO, Tucson, AZ 85721 USA

[3] Boston Univ, Coll Engn, Dept Elect & Comp Engn, Boston, MA 02215 USA

[4] Boston Univ, Coll Engn, Dept Phys, Boston, MA 02215 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.86.4084

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Previous work has demonstrated the existence of soliton defect states with charges +/-e/2 in the limits of zero and infinite on-site Coulomb interactions in the one-dimensional (1D) quarter-filled band. For large but finite on-site Coulomb interaction, the low temperature 2k(F) bond distortion that occurs within the 4k(F) bond-distorted phase is accompanied by charge ordering on the sites. We show that a "reintegerization" of the defect charge occurs in this bond-charge-density-wave state due to a "binding" of the fractional charges. We indicate briefly possible implications of this result for mechanisms of organic superconductivity.

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页码：4084 / 4087

页数：4

相关论文

共 23 条

[1] Mobile bipolaron [J].

Bonca, J ;

Katrasnik, T ;

Trugman, SA .

PHYSICAL REVIEW LETTERS, 2000, 84 (14) :3153-3156

[2] Charge ordering in the TMTTF family of molecular conductors [J].

Chow, DS ;

Zamborszky, E ;

Alavi, B ;

Tantillo, DJ ;

Baur, A ;

Merlic, CA ;

Brown, SE .

PHYSICAL REVIEW LETTERS, 2000, 85 (08) :1698-1701

[3] EVIDENCE FOR SOLITONS IN CONDUCTING ORGANIC CHARGE-TRANSFER CRYSTALS [J].

EPSTEIN, AJ ;

KAUFER, JW ;

ROMMELMANN, H ;

HOWARD, IA ;

CONWELL, EM ;

MILLER, JS ;

POUGET, JP ;

COMES, R .

PHYSICAL REVIEW LETTERS, 1982, 49 (14) :1037-1041

[4] SOLITONS IN CONDUCTING POLYMERS [J].

HEEGER, AJ ;

KIVELSON, S ;

SCHRIEFFER, JR ;

SU, WP .

REVIEWS OF MODERN PHYSICS, 1988, 60 (03) :781-850

[5] STATISTICS OF SOLITONS IN QUARTER-FILLED-BAND, LARGE-U QUASI-ONE-DIMENSIONAL CRYSTALS [J].

HOWARD, IA ;

CONWELL, EM .

PHYSICAL REVIEW B, 1985, 31 (04) :2140-2145

[6]

Ishiguro T., 1998, ORGANIC SUPERCONDUCT

[7] Coexistence of SDW and CDW in quarter-filled organic conductors [J].

Kobayashi, N ;

Ogata, M .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1997, 66 (11) :3356-3359

[8] Theory of coexisting charge and spin-density waves in (TMTTF)2Br, (TMTSF)2PF6, and α-(BEDT-TTF)2MHg(SCN)4 [J].

Mazumdar, S ;

Ramasesha, S ;

Clay, RT ;

Campbell, DK .

PHYSICAL REVIEW LETTERS, 1999, 82 (07) :1522-1525

[9] Bond-order and charge-density waves in the isotropic interacting two-dimensional quarter-filled band and the insulating state proximate to organic superconductivity [J].

Mazumdar, S ;

Clay, RT ;

Campbell, DK .

PHYSICAL REVIEW B, 2000, 62 (20) :13400-13425

[10] Dielectric response of the charge-induced correlated state in the quasi-one-dimensiona1 conductor (TMTTF)2PF6 [J].

Nad, F ;

Monceau, P ;

Carcel, C ;

Fabre, JM .

PHYSICAL REVIEW B, 2000, 62 (03) :1753-1756