標題: Recovery of the Aharonov-Bohm oscillations in asymmetrical quantum rings
作者: Voskoboynikov, O.
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
公開日期: 七月-2016
摘要: We theoretically investigate suppression and recovery of the Aharonov-Bohm oscillations of the diamagnetic response of electrons (holes) confined in self-assembled IncGa1-cAs/GaAs semiconductor reflection asymmetrical quantum rings. Based on the mapping method and gauge-origin-independent definition for the magnetic vector potential we simulate the energies and wave functions of the electron (hole) under external magnetic and electric fields. We examine the transformation of the ground state wave function of the electron (hole) in reflection asymmetrical rings from localized in one of the potential valleys (dotlike shape of the wave function) to distributed over all volume of the ring (ringlike shape) under an appropriate lateral electric field. This transformation greatly recovers the electron (hole) diamagnetic coefficient and Aharonov-Bohm oscillations of the diamagnetic response of the ring. However, the recovering electric field for the first Aharonov-Bohm diamagnetic oscillation of the electron is a suppressing one for the hole (and vice versa). This can block the recovery of the optical Aharonow-Bohm effect in IncGa1-cAs/GaAs asymmetrically wobbled rings. However, the recovery of the Aharonov-Bohm oscillations for the independent electron (hole) by the external electric field remains interesting and feasible objective for the asymmetric rings. (C) 2016 Author(s).
URI: http://dx.doi.org/10.1063/1.4958875
http://hdl.handle.net/11536/134144
ISSN: 2158-3226
DOI: 10.1063/1.4958875
期刊: AIP ADVANCES
Volume: 6
Issue: 7
顯示於類別:期刊論文