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Numerical simulation of coupling effect on electronic states in quantum wires

机译:量子线中电子态耦合效应的数值模拟

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摘要

In this paper, the Schrodinger equation is solved for approximation of the ground state energies and associated wave functions of carriers confined in a rectangular semiconductor (SC) quantum wire embedded in a SiO2 matrix. The problem was treated with the effective one band Hamiltonian. The finite difference scheme was used for the discretization of 2D Schrodinger equation and LAPACK package to resolve the band matrix. The energy levels were determined and the coupling between quantum wires was investigated. The effect on energies and relative wave functions of quantum wires number, size and separation was studied. The results obtained show that the energy levels can be importantly modified and controlled by these parameters. The interaction is manifested by a reduction in energies and an increase in the peak value of the wave function of the higher energy wire. This study offers a fast and inexpensive way to check device designs and processes and can be used in diverse device applications.
机译:在本文中,对薛定rod方程进行了求解,以近似地限制了嵌入在SiO2矩阵中的矩形半导体(SC)量子线中载流子的基态能量和相关的波函数。该问题已通过有效的单频带哈密顿量得到解决。将有限差分方案用于二维Schrodinger方程和LAPACK包的离散化,以求解带矩阵。确定能级并研究量子线之间的耦合。研究了量子线的数量,大小和间距对能量和相对波函数的影响。获得的结果表明,可以通过这些参数对能量水平进行重要的修改和控制。相互作用通过能量的降低和高能线的波函数的峰值的增加来体现。这项研究提供了一种快速而廉价的方法来检查设备的设计和工艺,并且可以用于各种设备应用中。

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