Bipolaron assisted Bloch-like oscillations in organic lattices

被引：4

作者：

Ribeiro, Luiz Antonio, Jr. ^{[1
,2
]}

da Cunha, Wiliam Ferreira ^{[3
]}

Magela e Silva, Geraldo ^{[3
]}

机构：

[1] Univ Brasilia, Int Ctr Condensed Matter Phys, POB 04531, BR-70919970 Brasilia, DF, Brazil

[2] Univ Brasilia, UnB Fac Planaltina, BR-73345010 Planaltina, DF, Brazil

[3] Univ Brasilia, Inst Phys, BR-70919970 Brasilia, DF, Brazil

来源：

PHYSICS LETTERS A | 2017年 / 381卷 / 22期

关键词：

Polaron; Bipolaron; Charge Transport; Conjugated Polymers; POLARON DYNAMICS; SCATTERING; TEMPERATURE; TRANSPORT; STABILITY; POLYMERS;

D O I：

10.1016/j.physleta.2017.04.017

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The transport of a dissociated bipolaron in organic one-dimensional lattices is theoretically investigated in the scope of a tight-binding model that includes electron-lattice interactions and an external electric field. Remarkably, the results point to a physical picture in which the dissociated bipolaron propagates as a combined state of two free-like electrons that coherently perform spatial Bloch oscillations (BO) above a critical field strength. It was also obtained that the BO's trajectory presents a net forward motion in the direction of the applied electric field. The impact of dynamical disorder in the formation of electronic BOs is determined. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：1915 / 1919

页数：5

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