MX CHAINS - 1-D ANALOG OF CUD PLANES

被引：15

作者：

GAMMEL, JT ^{[1
]}

BATISTIC, I ^{[1
]}

BISHOP, AR ^{[1
]}

LOH, EY ^{[1
]}

MARIANER, S ^{[1
]}

机构：

[1] UNIV CALIF LOS ALAMOS SCI LAB,CTR NON LINEAR STUDIES,LOS ALAMOS,NM 87544

来源：

PHYSICA B | 1990年 / 163卷 / 1-3期

关键词：

D O I：

10.1016/0921-4526(90)90240-U

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We study a two-band Peierls-Hubbard model for halogen-bridged mixed-valence transition metal linear chain complexes (MX chains). We include electron-electron correlations (both Hubbard and PPP-like expressions) using several techniques including calculations in the zero-hopping limit, exact diagonalization of small systems, mean field approximation, and a Gutzwiller-like ansatz for quantum phonons. The adiabatic optical absorption and phonon spectra for both photo-excited and doping induced defects (kinks, polarons, bipolarons and excitons) are discussed. A long period phase which occurs even at commensurate filling for certain parameter values may be related to twinning. The effect of including the electron-phonon in addition to the electron-electron interaction on the polaron/bipolaron (pairing) competition is especially interesting when this class of compounds is viewed as a 1-D analog of high-temperature superconductors. © 1990.

引用

页码：458 / 462

页数：5

共 32 条

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[6] CHARGE-DENSITY WAVES AND LOCAL STATES IN QUASI-ONE-DIMENSIONAL MIXED-VALENCE INORGANIC COMPLEXES
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STROUD, MA
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SWANSON, BI
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[J]. SOLID STATE COMMUNICATIONS, 1988, 65 (07) : 723 - 729
[7] DAY P, 1974, LOW DIMENSIONAL COOP, P191
[8] DEGIORGI L, 1989, SYNTHETIC MET, V29, pF137, DOI 10.1016/0379-6779(89)90891-6
[9] THE MID-INFRARED SIGNATURE OF PHOTOINDUCED DEFECTS IN THE QUASI-ONE-DIMENSIONAL MIXED-VALENCE SOLID [PTII(EN)2][PTIV(EN)2CL2][CLO4]4
DONOHOE, RJ
EKBERG, SA
TAIT, CD
SWANSON, BI
[J]. SOLID STATE COMMUNICATIONS, 1989, 71 (01) : 49 - 52
[10] DONOHOE RJ, UNPUB CHEM MAT

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