Tạp chất trạng thái kích thích thấp tích tụ năng lượng trong ingan/gan parabolic qww: tác động của từ trường

• Ngôn ngữ: vie
• Ký hiệu phân loại: 571.47 *Effects of electricity and magnetism
• Thông tin xuất bản: Communications in Physics, 2013
• Mô tả vật lý: 275-281
• Bộ sưu tập: Metadata
• ID: 565108

Tóm tắt

In this paper, the authors have investigated the magnetic field effect on the lowest excitedstate binding energy of hydrogenic shallow-donor impurity in wurtzite InGaN/GaN parabolic transversal-section quantum-well wire (PQWW) using the finite-difference method within the quasione-dimensional effective potential model. The calculations are performed within the framework of the effective mass approximation. A cylindrical QWW effective radius is taken into account to describe the lateral confinement strength. The numerical results show that: (i) the probability density is the largest on a circularity whose radius is the effective radihs and (ii) the lowest excited-state binding energy is the largest when an impurity is located on this circularity while it starts to decrease as the impurity is away from the circularity.