Anomalous phase shift in a twisted quantum loop
Anomalous phase shift in a twisted quantum loop
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DOI：
10.1088/1751-8113/43/35/354013
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发表时间：
2010-06
期刊：
影响因子：
--
通讯作者：
H. Taira;H. Shima
中科院分区：
文献类型：
--
作者：
H. Taira;H. Shima
考虑了扭转量子环中电子的相干运动，探讨了环的扭转效应。由螺旋原子组态组成的环的内部扭转在电子的本征态中产生非平凡的量子相移。这种扭转引起的相移导致了新型的持续电流和Aharonov-Bohm电导振荡。这两种现象可以发生，甚至当没有磁通量穿透内部的扭曲的环，从而在完全相反，在观察到的对应物在非扭曲的环。
The coherent motion of electrons in a twisted quantum ring is considered to explore the effect of torsion inherent to the ring. Internal torsion of the ring composed of helical atomic configuration yields a non-trivial quantum phase shift in the electrons' eigenstates. This torsion-induced phase shift causes novel kinds of persistent current flow and an Aharonov–Bohm-like conductance oscillation. The two phenomena can occur even when no magnetic flux penetrates inside the twisted ring, thus being in complete contrast with the counterparts observed in untwisted rings.