Kinetics of Two- and Three-Dimensional Growth at Surfaces

9315691罗宾逊技术摘要：‘2+LD’生长的动力学与表面外部形状的演变有关。由于Kardar，Parisi和Zhang最近的一项理论预测了这种动力学的普遍行为。建议利用利用同步辐射的表面X射线衍射的最新进展，现在可以在时间域中探索表面和界面。其主要目的是寻找能够测试宇宙行为的模型系统，并理解其背后的物理原理。我们将用铅/铜(100)体系研究金属衬底上简单单分子膜的动力学。Pd2Si/Si(111)系统将用于研究晶体硅化物薄膜形成过程中金属与硅反应形成的复杂界面。非技术摘要：本提案支持一项将在纽约州布鲁克海文的国家同步加速器光源上进行的实验计划。将使用的光束线是为在表面上进行最先进的衍射实验而设计的。拟议中的实验旨在了解表面如何在原子尺度和0.001秒的时间尺度上生长的细节。此外，这项工作将对理解晶体硅化物薄膜的形成有直接的应用。这种材料对半导体互连越来越重要，特别是对超小尺寸的电子器件。***

9315691 Robinson Technical abstract: The kinetics of '2+lD' growth relates to the evolution of the external shape of a surface. A universal behavior of this kinetics has been predicted by a recent theory due to Kardar, Parisi and Zhang. It is proposed to capitalize on the recent advances in surface x-ray diffraction using synchrotron radiation which now permit the exploration of surfaces and interfaces in the time domain. The primary aim is to seek out model systems which provide a test of the universal behavior and to understand the underlying physics. The kinetics of a simple monolayer on a metal substrate will be studied using the Pb/Cu(100) system. The Pd2Si/Si (lll) system will be used to study the complex interface formed by the reaction between metals and silicon in the formation of thin films of crystalline silicides. Non-technical abstract: This proposal supports an experimental program that will be based at the National Synchrotron Light Source in Brookhaven, N.Y. The beamline to be used was designed for state-of-the-art diffraction experiments on surfaces. The proposed experiments are aimed at understanding the details of how a surface grows on an atomic scale and on a time scale of 0.00l seconds. In addition, the work will have direct application to understanding the formation of thin films of crystalline silicides. Such materials are increasingly important for semiconductor interconnects, especially for electronic devices with ultrasmall dimensions. ***