Computational Methods for Electromechanical Fields in Self-Assembled Quantum Dots
作者机构：Alsion 2Mads Clausen InstituteUniversity of Southern DenmarkDK-6400 SønderborgDenmark
出 版 物：《Communications in Computational Physics》 (计算物理通讯（英文）)
年 卷 期：2012年第11卷第3期
页 面：797-830页
核心收录：
学科分类：1002[医学-临床医学] 100201[医学-内科学(含：心血管病、血液病、呼吸系病、消化系病、内分泌与代谢病、肾病、风湿病、传染病)] 0704[理学-天文学] 0702[理学-物理学] 10[医学]
主 题：Quantum dots electromechanical fields continuum model valence force field boundary conditions
摘 要：A detailed comparison of continuum and valence force field strain calculations in quantum-dot structures is presented with particular emphasis to boundary conditions,their implementation in the finite-elementmethod,and associated implications for electronic *** first part of this work provides the equation framework for the elastic continuum model including piezoelectric effects in crystal structures as well as detailing the Keating model equations used in the atomistic valence force field *** the variety of possible structure shapes,a choice of pyramidal,spherical and cubic-dot shapes is made having in mind their pronounced shape differences and practical *** this part boundary conditions are also considered;in particular the relevance of imposing different types of boundary conditions is highlighted and *** the final part,quantum dots with inhomogeneous indium concentration profiles are studied in order to highlight the importance of taking into account the exact In concentration profile for real quantum *** influence of strain,electric-field distributions,and material inhomogeneity of spherical quantum dots on electronic wavefunctions is briefly discussed.
维普期刊数据库