Author(s)

T. Miyoshi, Y. Okawa, H. Tsuchiya & M. Ogawa

Abstract

The eigenmodes of electron wave propagating through a physically confined Si-quantum wire by a Si02 barrier are analyzed self-consistently by using a finite element method. The anisotropic effective mass tensor corresponding to the three inequivalent alignments of conduction band valleys in Si and the continuity of the probability current densities at the Si-SiO] interface are duly taken into account. As a result, the eigenenergies of electron wave and the electron density distribution are found to be greatly affected by the electron-electron interaction. It is also demonstrated that the number of guided modes in the Si-quantum wire is controlled by the gate bias voltage. 1 Introduction A Si-quantum wire on a SOI(silicon on insulator) substrate is a promising quantum device, because it is

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