Diffusivity of adatoms on plasma-exposed surfaces determined from the ionization energy approximation and ionic polarizability

被引：18

作者：

Arulsamy, Andrew Das ^{[1
]}

Ostrikov, Kostya ^{[1
,2
]}

机构：

[1] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia

[2] CSIRO Mat Sci & Engn, Lindfield, NSW 2070, Australia

来源：

PHYSICS LETTERS A | 2009年 / 373卷 / 26期

基金：

澳大利亚研究理事会;

关键词：

Quantum dots; Ionization energy; Atomic and displacement polarizabilities; Surface diffusion; Activation energy; Plasma-based nanoassembly; LOW-TEMPERATURE GROWTH; QUANTUM DOTS; NORMAL-STATE; MODEL; SI; NANOPARTICLES;

D O I：

10.1016/j.physleta.2009.04.057

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Microscopic surface diffusivity theory based on atomic ionization energy concept is developed to explain the variations of the atomic and displacement polarizations with respect to the surface diffusion activation energy of adatoms in the process of self-assembly of quantum dots on plasma-exposed surfaces. These polarizations are derived classically, while the atomic polarization is quantized to obtain the microscopic atomic polarizability. The surface diffusivity equation is derived as a function of the ionization energy. The results of this work can be used to fine-tune the delivery rates of different adatoms onto nanostructure growth surfaces and optimize the low-temperature plasma based nanoscale synthesis processes. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.

引用

页码：2267 / 2272

页数：6

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