RHEED intensities from two-dimensional heteroepitaxial nanoscale systems

Abstract
A practical computing algorithm has been developed for calculating the reflection high-energy electron diffraction (RHEED) from the molecular beam epitaxy growing surface. The calculations are based on the use of the dynamical diffraction theory in which the electrons are taken to be diffracted by a potential, which is periodic in the dimension perpendicular to the surface. The computer program presented in this paper enables calculations for three basic types of diffuse potential for crystal...

Title of program: RHEED_DIFF
Catalogue Id: AETW_v1_0

Nature of problem
RHEED rocking curves (the specular beam intensities versus the glancing angle) recorded from heteroepitaxial layers are used for the non-destructive evaluation of epilayer thickness and composition with a high degree of accuracy. Rocking curves from such heterostructures are often very complex because the thickness fringes from every layer beat together. Simulations based on the dynamical diffraction theory are generally used to interpret the rocking curves of such structures from which very sma ...

Versions of this program held in the CPC repository in Mendeley Data
AETW_v1_0; RHEED_DIFF; 10.1016/j.cpc.2014.07.003

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)

摘要
一种实用的计算算法已被开发，用于计算分子束外延生长表面的反射高能电子衍射（RHEED）。该计算基于动态衍射理论，其中电子被视为由一个势场衍射，该势场在垂直于表面的维度上呈周期性。本文中提出的计算机程序能够对晶体中三种基本的漫反射势进行计算...

程序标题：RHEED_DIFF
目录编号：AETW_v1_0

问题性质
从异质外延层记录的RHEED摆动曲线（镜面光束强度与掠射角的比值）用于以高精度进行外延层厚度和组成的无损评估。由于每一层的厚度干涉条纹相互叠加，此类异质结构的摆动曲线通常非常复杂。基于动态衍射理论的模拟通常用于解释此类结构的摆动曲线，从中可以获取非常小的...