物理学报Issue(10)：38-44,7.DOI:10.7498/aps.62.100306
自旋-轨道耦合玻色-爱因斯坦凝聚势垒散射特性的研究*
Barrier scattering properties in spin-orbit coupled Bose-Einstein condensate∗
摘要
Abstract
In this paper, the phenomenon of double barrier scattering in spin-orbit coupling Bose-Einstein condensate is studied and the analytical expression of transmission coefficient of the system is therefore obtained. On the basis of the above study, how to deal with Klein tunneling and bound Dirac particles is also discussed to devise an experimental scheme of trapping Dirac particles in captivity. Besides, numerical simulation of the barrier scattering pattern of Dirac particles is performed in this paper by the time splitting spectral method. Through the analysis of transmission situation of Dirac particles directing at the Klein barrier in both the center and margin part of blocked area and the study of the influence of non-linear interaction on the evolution of Dirac particles from both repelling and attracting effect, the conclusion can be drawn that although the influence of non-linear interaction on scattering property of particles is negligible to some extent, the strong non-linear interaction will completely destroy the momentum distribution of wave packets so that the result of barrier scattering of Dirac particles can be dramatically changed.关键词
自旋-轨道耦合/Klein隧穿/势垒散射/玻色-爱因斯坦凝聚Key words
spin-orbit coupled/Klein tunneling/barrier scattering/Bose-Einstein condensate引用本文复制引用
李志†,王建忠..自旋-轨道耦合玻色-爱因斯坦凝聚势垒散射特性的研究*[J].物理学报,2013,(10):38-44,7.基金项目
国家自然科学基金(批准号:11072107,91016022,11232007)资助的课题.@@@@Project supported by the National Natural Science Foundation of China (Grant Nos.11072107,91016022,11232007) （批准号:11072107,91016022,11232007）
