Simulation of mirror electron microscopy caustic images in three-dimensions

Kennedy, S. M., Zheng, C. X. and Jesson, David ORCID: https://orcid.org/0000-0003-0897-1445 2018. Simulation of mirror electron microscopy caustic images in three-dimensions. Surface Review and Letters 25 (1) , 1950013. 10.1142/S0218625X19500136

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Abstract

A full, three{dimensional (3D) ray tracing approach is developed to simulate the caustics visible in mirror electron microscopy (MEM). The method reproduces MEM image contrast resulting from 3D surface relief. To illustrate the potential of the simulation methods we study the evolution of crater contrast associated with a movie of GaAs structures generated by the droplet epitaxy technique. Speci�cally, we simulate the image contrast resulting from both a precursor stage and the �nal crater morphology which is consistent with an inverted pyramid consisting of (111) facet walls. The method therefore facilities the study of how self{assembled quantum structures evolve with time and, in particular, the development of anisotropic features including faceting.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy Q Science > QC Physics
Publisher:	World Scientific Publishing Co
ISSN:	0218-625X
Funders:	EPSRC
Date of First Compliant Deposit:	4 September 2017
Date of Acceptance:	4 September 2017
Last Modified:	05 May 2023 09:47
URI:	https://orca.cardiff.ac.uk/id/eprint/104296

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