Loughborough University
Leicestershire, UK
LE11 3TU
+44 (0)1509 263171
Loughborough University

Loughborough University Institutional Repository

Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/28202

Title: Honeycomb and triangular domain wall networks in heteroepitaxial systems
Authors: Elder, Ken R.
Chen, Z.
Elder, K.L.M.
Hirvonen, Petri
Mkhonta, S.K.
Ying, S.C.
Granato, E.
Huang, Zhi-Feng
Ala-Nissila, Tapio
Issue Date: 2016
Publisher: © the Authors. Published by AIP Publishing
Citation: ELDER, K.R. ...et al., 2016. Honeycomb and triangular domain wall networks in heteroepitaxial systems. Journal of Chemical Physics, 144: 174703.
Abstract: © 2016 Author(s).A comprehensive study is presented for the influence of misfit strain, adhesion strength, and lattice symmetry on the complex Moiré patterns that form in ultrathin films of honeycomb symmetry adsorbed on compact triangular or honeycomb substrates. The method used is based on a complex Ginzburg-Landau model of the film that incorporates elastic strain energy and dislocations. The results indicate that different symmetries of the heteroepitaxial systems lead to distinct types of domain wall networks and phase transitions among various surface Moiré patterns and superstructures. More specifically, the results show a dramatic difference between the phase diagrams that emerge when a honeycomb film is adsorbed on substrates of honeycomb versus triangular symmetry. It is also shown that in the small deformation limit, the complex Ginzburg-Landau model reduces to a two-dimensional sine-Gordon free energy form. This free energy can be solved exactly for one dimensional patterns and reveals the role of domains walls and their crossings in determining the nature of the phase diagrams.
Description: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in ELDER, K.R. ...et al., 2016. Honeycomb and triangular domain wall networks in heteroepitaxial systems. Journal of Chemical Physics, 144: 174703 and may be found at https://doi.org/10.1063/1.4948370
Version: Published
DOI: 10.1063/1.4948370
URI: https://dspace.lboro.ac.uk/2134/28202
Publisher Link: https://doi.org/10.1063/1.4948370
ISSN: 0021-9606
Appears in Collections:Published Articles (Maths)

Files associated with this item:

File Description SizeFormat
Ala-Nissila_1.4948370.pdfPublished version8.84 MBAdobe PDFView/Open


SFX Query

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.