Electron self-trapping and self-focusing in periodic chains with a finite nonlinear response time

被引：12

作者：

de Moura, F. A. B. F. ^{[1
]}

Vidal, E. J. G. G. ^{[1
]}

Gleria, Iram ^{[1
]}

Lyra, M. L. ^{[1
]}

机构：

[1] Univ Fed Alagoas, Inst Fis, BR-57072970 Maceio, AL, Brazil

来源：

PHYSICS LETTERS A | 2010年 / 374卷 / 40期

关键词：

Anderson localization; Wave-packet dynamics; Self-focusing; Nonlinearity; Self-trapping; SCHRODINGER-EQUATION; QUANTUM DIMER; EVOLUTION; DYNAMICS; SYSTEMS;

D O I：

10.1016/j.physleta.2010.08.016

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this work we investigate the one-electron wave-packet dynamics in finite closed chains with relaxational nonlinearity. We found that, besides exhibiting the well-known self-trapping regime at strong coupling, the non-instantaneous character of the nonlinearity favors the self-focusing of the wave-packet at intermediate coupling strengths. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：4152 / 4155

页数：4

共 31 条

[21] Absence of wave packet diffusion in disordered nonlinear systems [J].

Kopidakis, G. ;

Komineas, S. ;

Flach, S. ;

Aubry, S. .

PHYSICAL REVIEW LETTERS, 2008, 100 (08)

[22] Anderson localization and nonlinearity in one-dimensional disordered photonic lattices [J].

Lahini, Yoav ;

Avidan, Assaf ;

Pozzi, Francesca ;

Sorel, Marc ;

Morandotti, Roberto ;

Christodoulides, Demetrios N. ;

Silberberg, Yaron .

PHYSICAL REVIEW LETTERS, 2008, 100 (01)

[23] Long-range interactions and nonextensivity in one-dimensional systems [J].

Nazareno, HN ;

de Brito, PE .

PHYSICAL REVIEW B, 1999, 60 (07) :4629-4634

[24] Effects of off-diagonal nonlinearity on the time evolution of an initially localized mode [J].

Pan, ZW ;

Xiong, SJ ;

Gong, CD .

PHYSICAL REVIEW E, 1997, 56 (04) :4744-4750

[25] Destruction of Anderson localization by a weak nonlinearity [J].

Pikovsky, A. S. ;

Shepelyansky, D. L. .

PHYSICAL REVIEW LETTERS, 2008, 100 (09)

[26]

Ponomarenko SA, 2006, PHYS REV LETT, V97, DOI [10.1103/PhysRevLett.97.013901, 10.1103/PhysRevLett.013901]

[27] Electron-phonon interaction close to a Mott transition [J].

Sangiovanni, G ;

Capone, M ;

Castellani, C ;

Grilli, M .

PHYSICAL REVIEW LETTERS, 2005, 94 (02)

[28] Delocalization of wave packets in disordered nonlinear chains [J].

Skokos, Ch. ;

Krimer, D. O. ;

Komineas, S. ;

Flach, S. .

PHYSICAL REVIEW E, 2009, 79 (05)

[29]

Wang BB, 2006, PHYS REV A, V74, DOI 10.1103/PhysRevA.74.063610

[30] ANALYTICAL EVALUATION OF THE TIME EVOLUTION OF A NONADIABATIC NONLINEAR QUANTUM DIMER UNDER THE AVERAGING APPROXIMATION [J].

WU, HL ;

GRIGOLINI, P ;

KENKRE, VM .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1990, 2 (19) :4417-4427

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