Electronic and vibronic structure of the nonplanar organic charge-transfer salt m-BDNT-PF6

被引：7

作者：

Dong, J ^{[1
]}

Yakushi, K ^{[1
]}

Yamashita, Y ^{[1
]}

Imaeda, K ^{[1
]}

Inokuchi, H ^{[1
]}

机构：

[1] INST MOLEC SCI,OKAZAKI,AICHI,JAPAN

来源：

PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 1996年 / 195卷 / 02期

关键词：

D O I：

10.1002/pssb.2221950228

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The monoclinic form of BDNT-PF6 (m-BDNT-PF6) is characterized as a pseudo-one-dimensional half-filled Hubbard system from the electrical conductivity, magnetic susceptibility, and single crystal optical spectra. m-BDNT-PF6 undergoes a spin-Peierls transition at about 150 K. The lattice dimerization was confirmed by the evolution of the vibronic modes at low temperature. The small polaron binding energy of this compound, which was estimated through the analysis of the vibronic modes, is smaller than those of TTF, TCNQ, or CA. Hubbard parameters U and t were obtained to be 0.8 and 0.13 eV by analyzing the charge-transfer band. The optical and magnetic data are consistent with each other.

引用

页码：611 / 623

页数：13

共 18 条

[1] CORRELATION-EFFECTS ON THE OSCILLATOR STRENGTH OF OPTICAL-ABSORPTION - SUM-RULE FOR THE ONE-DIMENSIONAL HUBBARD-MODEL [J].