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Aspects of reflectance anisotropy spectroscopy from semiconductor surfaces

Sobiesierski, Zbigniew, Westwood, David I. and Matthai, Clarence Cherian 1998. Aspects of reflectance anisotropy spectroscopy from semiconductor surfaces. Journal of Physics: Condensed Matter 10 (1) , pp. 1-43. 10.1088/0953-8984/10/1/005

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There currently exists a wide range of powerful techniques for probing surfaces, mainly involving the use of electron or ion beams under high- or ultra-high-vacuum conditions. Recently there have been major efforts to develop surface sensitive optical probes that have the inherent advantage that they can be applied in more challenging environments such as in high pressures or under liquids and in real time. The most powerful of these techniques to emerge ( years ago) is reflection anisotropy spectroscopy (RAS), which early on demonstrated its ability to distinguish different reconstructions of GaAs(001) and to detect monolayer-growth-related oscillations similar to those routinely obtained using reflection high-energy electron diffraction. This article describes some aspects of the development of the RAS technique since that time, focusing on our own theoretical and experimental studies concerning the (001) surfaces of cubic semiconductors which have been prepared by molecular beam epitaxy. These studies demonstrate that in surface chemistry, structure and electronic properties RAS has made powerful contributions to the study of such surfaces.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Lifelong Learning
Physics and Astronomy
Subjects: Q Science > QC Physics
Uncontrolled Keywords: Semiconductors; Surfaces, interfaces and thin films; Chemical physics and physical chemistry
Publisher: IOP Publishing
ISSN: 0953-8984
Last Modified: 04 Jun 2017 02:38

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