发光学报2012，Vol.33Issue(11)：1198-1203,6.DOI:10.3788/fgxb20123311.1198
外场下压力及屏蔽对无限深量子阱中施主结合能的影响
Hydrostatic Pressure and Screening Influence on Binding Energies of Impurity in Quantum Wells with Infinite Barriers Under An External Magnetic Field
摘要
Abstract
Considering the hydrostatic pressure and screening effect on the GaN/Alx Ga1-x N quantum well with infinite barriers under an external magnetic field. The variational methods are used to numerical calculation the binding energies of the impurity in the system. The relations between the binding energies of donors with magnetic field strength and well width is given. We also discussed the difference between the cases with and without screening. The resultds indicate that the binding energy increases with the well width under a fixed magnetic field strength and pressure. The results also show that the binding energy increases with the magnetic field strength for a given well width and pressure. Because of the screening reduce coulomb interaction effectively, the binding energy of impurity states decreases significantly. Screening effect increases with the pressure and decreases with the magnetic field strength.关键词
量子阱/压力/外磁场/屏蔽/结合能Key words
quantum well/ pressure/ external magnetic field/ screening/ binding energy分类
数理科学引用本文复制引用
刘贺,温淑敏,赵春旺,哈斯花..外场下压力及屏蔽对无限深量子阱中施主结合能的影响[J].发光学报,2012,33(11):1198-1203,6.基金项目
国家自然科学基金(11062008) （11062008）
教育部新世纪优秀人才支持计划(NCET-10-D909) （NCET-10-D909）
内蒙古工业大学校基金(ZD201220) （ZD201220）
内蒙古自治区自然科学基金(2010BS0102)资助项目 （2010BS0102）
