MOTION OF CHARGED SOLITON IN POLYACETYLENE DUE TO ELECTRIC-FIELD .2. BEHAVIOR OF WIDTH

被引：37

作者：

KUWABARA, M ^{[1
]}

ONO, Y ^{[1
]}

TERAI, A ^{[1
]}

机构：

[1] UNIV TOKYO,DEPT PHYS,BUNKYO KU,TOKYO 113,JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1991年 / 60卷 / 04期

关键词：

SOLITON; CHARGED SOLITON; SSH MODEL; POLYACETYLENE; AMPLITUDE MODE;

D O I：

10.1143/JPSJ.60.1286

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

By numerical simulations treating the motion of a charged soliton in polyacetylene, we analyze the width of a moving soliton. The motion of the soliton is induced by applying an electric field as in the previous work. The soliton width is estimated by two methods; one is from the excess charge density profile and the other from the distortion in the lattice displacement. Both results indicate that the width decreases as the soliton velocity increases. Quantitatively, however, the amount of decrease is different in the two cases; the maximum change of the width is about 10% in the former case whereas it is 20% in the latter. Furthermore, the width obtained from the lattice distortion is found to oscillate as a function of time, consistently with the excitation of the amplitude mode around a soliton.

引用

页码：1286 / 1293

页数：8

共 15 条

[11] SOLITON EXCITATIONS IN POLYACETYLENE [J].

SU, WP ;

SCHRIEFFER, JR ;

HEEGER, AJ .

PHYSICAL REVIEW B, 1980, 22 (04) :2099-2111

[12] SOLITONS IN POLYACETYLENE [J].

SU, WP ;

SCHRIEFFER, JR ;

HEEGER, AJ .

PHYSICAL REVIEW LETTERS, 1979, 42 (25) :1698-1701

[13] CONTINUUM MODEL FOR SOLITONS IN POLYACETYLENE [J].

TAKAYAMA, H ;

LINLIU, YR ;

MAKI, K .

PHYSICAL REVIEW B, 1980, 21 (06) :2388-2393

[14] PHONONS AROUND A SOLITON AND A POLARON IN SU-SCHRIEFFER-HEEGER MODEL OF TRANS-(CH)X [J].

TERAI, A ;

ONO, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1986, 55 (01) :213-221

[15] BROWNIAN-MOTION OF A DOMAIN-WALL AND THE DIFFUSION CONSTANTS [J].

WADA, Y ;

SCHRIEFFER, JR .

PHYSICAL REVIEW B, 1978, 18 (08) :3897-3912

← 1 2 →