Spatially overlapped coupled matter‐wave bright solitons are considered in binary Bose‐Einstein condensates with nonlinear optical lattices(NOLs) and study the properties of scattering patterns due to a localized defect. It is shown that spatially overlapped solitons become separated and exhibit different scattering patterns with the variation of inter‐species interaction. The NOL interplays with the defect and tends to influence the scattering properties. However, the effect of NOL varies with strength of inter‐component interaction. It is found that, if this interaction is weak then the scattering center gets shifted outside the defect. However, for a stronger inter‐component interaction, the scattering takes place from the defect and leads to different scattering patterns.

中文翻译：

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非线性光学晶格二元玻色-爱因斯坦凝聚态缺陷引起的亮孤子散射

考虑了具有非线性光学晶格（NOL）的二元玻色-爱因斯坦凝聚体中的空间重叠耦合物质波亮孤子，并研究了由于局部缺陷而导致的散射图案的特性。结果表明，随着物种间相互作用的变化，空间重叠的孤子变得分离并表现出不同的散射模式。NOL 与缺陷相互作用，往往会影响散射特性。然而，NOL 的效果随组分间相互作用的强度而变化。研究发现，如果这种相互作用较弱，则散射中心会移至缺陷之外。然而，对于更强的组分间相互作用，散射从缺陷处发生并导致不同的散射模式。