X-Ray Standing Wave Investigation of Heteroepitaxy: Alkali Halides on Germanium

提出了一种利用x射线驻波实验的独特能力来确定外延生长的化学结构不同的覆盖层的研究方案。近乎完美的水晶衬底。在专门配置的超高真空分析系统中，研究晶格匹配的碱卤化物在锗表面的生长习性，包括高能电子衍射和俄歇电子能谱。该装置还应非常适合于研究由入射高能电子束激发的驻波，这可能是一种新的具有广泛适用性的表面结构探头。对Ge上I-VI型异质外延的成功研究将允许设计光学性质在原子距离上有较大扰动的异质结构，一类全新的材料，在近紫外光中激发。这些材料可能会有重要的技术应用，例如可能开发新的紫外线激光器。

A research program is proposed which utilizes the unique capabilities of x-ray standing wave experiments to determine the structure of chemically distinct overlayers epitaxially grown on nearly perfect crystalline substrates. The growth habits of lattice matched alkali halides on germanium surfaces shall be studied in a specially configured ultra high vacuum analysis system which include high energy electron diffraction andAuger electron spectroscopy. This apparatus shall also be well-suited to investigate standing waves excited by an incident high energy electron beam, which may prove to be new surface structure probe of wide applicability. A successful study of I-Vii heteroepitaxy on germanium will permit the engineering of heterostructures with major perturbations in optical properties over atomic distances, an entirely new class of materials with excitations in the near ultra-violet. These materials may have important technological applications, such as the possible development of new ultra- violet lasers.