Ring Dirac solitons in nonlinear topological systems

被引：28

作者：

Poddubny, Alexander N. ^{[1
,2
]}

Smirnova, Daria A. ^{[1
,3
]}

机构：

[1] Australian Natl Univ, Nonlinear Phys Ctr, Canberra, ACT 2601, Australia

[2] Ioffe Inst, St Petersburg 194021, Russia

[3] Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod 603950, Russia

来源：

PHYSICAL REVIEW A | 2018年 / 98卷 / 01期

基金：

澳大利亚研究理事会; 俄罗斯基础研究基金会;

关键词：

FIELD; STABILITY; EQUATION;

D O I：

10.1103/PhysRevA.98.013827

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study solitons of the two-dimensional nonlinear Dirac equation with asymmetric cubic nonlinearity. We show that with the nonlinearity parameters specifically tuned, a high degree of localization of both spinor components is enabled on a ring of certain radius. Such ring Dirac soliton can be viewed as a self-induced nonlinear domain wall and can be implemented in nonlinear photonic graphene lattice with Kerr-like nonlinearities. Our model could be instructive for understanding localization mechanisms in nonlinear topological systems.

引用

页数：7

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