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arXiv 0708.0895cond-mat.mes-hallquant-ph
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通过控制半导体量子点的电限制势产生和检测非阿贝尔矩阵Berry相

Generation and detection of non-Abelian matrix Berry phases through manipulation of electric confinement potential of a semiconductor quantum dot

S. -R. Eric Yang, N. Y. Hwang

摘要:

在II-VI或III-V族n型半导体量子点中,通过改变限制势的形状,可以用{ \it all electrical means}产生并检测到矩阵Berry相。这是由于在存在自旋-轨道耦合项时的一般对称性考虑。由此产生的2 × 2矩阵Berry相位可以由两个几何原点数来表征。我们研究这些参数如何依赖于封闭绝热路径的形状和面积。我们建议如何在传输测量矩阵Berry相位可能被检测到。

英文摘要:

A matrix Berry phase can be generated and detected by {\it all electric means} in II-VI or III-V n-type semiconductor quantum dots by changing the shape of the confinement potential. This follows from general symmetry considerations in the presence of spin-orbit coupling terms. The resulting 2 x 2 matrix Berry phase can be characterized by two numbers of geometric origin. We investigate how these parameters depend on the shape and area of closed adiabatic paths. We suggest how the matrix Berry phase may be detected in transport measurements.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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