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Mobility asymmetry in InGaAs/InAlAs heterostructures with InAs quantum wires

机译:InAs量子线的InGaAs / InAlAs异质结构中的迁移不对称

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摘要

Strong asymmetry of electron mobility in InGaAs/InAlAs heterostructures (lattice matched to InP) with the presence of InAs quantum wires was observed. Self-assembled InAs quantum wires, embedded in an InGaAs matrix close to the hetero-interface, has a strong effect in electron conduction in the interface channel. The low temperature mobility for electrons moving parallel to the quantum wires is much higher than that of electrons moving perpendicular to the wires. The asymmetry in mobility is attributed to the difference in scattering cross section of the quantum wires in these two directions.
机译:在InAs量子线的存在下,观察到InGaAs / InAlAs异质结构(晶格与InP匹配)中电子迁移率的强不对称性。嵌入异质界面附近的InGaAs矩阵中的自组装InAs量子线对界面通道中的电子传导有很强的影响。平行于量子线运动的电子的低温迁移率远高于垂直于量子线运动的电子的低温迁移率。迁移率的不对称归因于量子线在这两个方向上的散射截面的差异。

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