三端结和环中费米电子轨迹的多子带输运和磁偏转
Multisubband transport and magnetic deflection of Fermi electron trajectories in three terminal junctions and rings
摘要：
我们研究了三端结和量子环中的电子输运，寻找电子轨道在子带间散射存在下的经典偏转。我们指出，虽然Aharonov-Bohm振荡和洛伦兹力的影响共存于低子带输运，更高的费米能量的同时观察到这两种效果是困难的，并要求仔细形成的结构。特别是，在量子环的通道宽于输入铅的洛伦兹力是很好地解决，但Aharonov-Bohm周期性失去了混沌散射事件。在通道长度相等的量子环和$T$形结中，Aharonov-Bohm振荡具有明显的周期性，但洛伦兹力效应并不明显。我们发现，系统的楔形结允许观察周期性Aharonov-Bohm振荡和磁偏转。
英文摘要：
We study the electron transport in three terminal junctions and quantum rings looking for the classical deflection of electron trajectories in presence of intersubband scattering. We indicate that although the Aharonov-Bohm oscillations and the Lorentz force effects co-exist in the low subband transport, for higher Fermi energies a simultaneous observation of the both effects is difficult and calls for carefully formed structures. In particular, in quantum rings with channels wider than the input lead the Lorentz force is well resolved but the Aharonov-Bohm periodicity is lost in chaotic scattering events. In quantum rings with equal length of the channels and $T$-shaped junctions the Aharonov-Bohm oscillations are distinctly periodic but the Lorentz force effects are not well pronounced. We find that systems with the wedge shaped junctions allow for observation of both the periodic Aharonov-Bohm oscillations and the magnetic deflection.
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