EFFECTS OF ON-CENTER IMPURITY ON AHARONOV-BOHM EFFECT IN CONCENTRIC DOUBLE QUANTUM RINGS

摘要：

In this paper, the binding energy and electronic eigenstates of a single electron confined in a concentric double quantum ring with an on-center donor and acceptor impurities in the presence of perpendicular magnetic field are calculated using the exact diagonalization method.The effects of centrifugal, confinement and diamagnetic potentials on the binding energy are investigated.It is found that the binding energy decreases by increasing the centrifugal or confinement potential.In contrast, the binding energy increases by increasing the magnetic field.We investigate the effects of on-center impurity on the energy spectrum and ground-state angular momentum transitions and show that the donor impurity increases the period of Aharonov-Bohm oscillation while the acceptor acts inversely.

关键词： Semiconductor nanostructures quantum confinement on-center impurity Double quantum rings

作者: HOJJATOLLAH K.SALEHANI KHOSROW SHAKOURI MAHDI ESMAEILZADEH MOHAMMAD HOSSEIN MAJLES ARA

作者单位: Department of Physics,Member of Young Research Clup,Damavand Branch,Islamic Azad University,Damavand Department of Physics,Damavand Branch,Islamic Azad University,Damavand,Iran Department of Physics,Iran University of Science and Technology,Tehran,Iran Department of Physics,Tarbiat Moallem University,Tehran,Iran

会议类型: 国际会议

会议名称: 3rd International Conference on Mechanical and Electrical Technology(ICMET2011) (2011第三届机械与电气技术国际会议)

会议地点: 大连

会议语种:英文

页码: 819-824

在线出版日期: 2011-08-26（万方平台首次上网日期，不代表论文的发表时间）