Alistair R. Overy
Design of crystal-like aperiodic solids with selective disorder–phonon coupling
Overy, Alistair R.; Cairns, Andrew B.; Cliffe, Matthew J.; Simonov, Arkadiy; Tucker, Matthew G.; Goodwin, Andrew L.
Authors
Andrew B. Cairns
Dr MATTHEW CLIFFE Matthew.Cliffe@nottingham.ac.uk
ASSOCIATE PROFESSOR
Arkadiy Simonov
Matthew G. Tucker
Andrew L. Goodwin
Abstract
Functional materials design normally focuses on structurally ordered systems because disorder is considered detrimental to many functional properties. Here we challenge this paradigm by showing that particular types of strongly correlated disorder can give rise to useful characteristics that are inaccessible to ordered states. A judicious combination of low-symmetry building unit and high-symmetry topological template leads to aperiodic ‘procrystalline’ solids that harbour this type of disorder. We identify key classes of procrystalline states together with their characteristic diffraction behaviour, and establish mappings onto known and target materials. The strongly correlated disorder found in these systems is associated with specific sets of modulation periodicities distributed throughout the Brillouin zone. Lattice dynamical calculations reveal selective disorder-driven phonon broadening that resembles the poorly understood ‘waterfall’ effect observed in relaxor ferroelectrics. This property of procrystalline solids suggests a mechanism by which strongly correlated topological disorder might allow independently optimized thermal and electronic transport behaviour, such as required for high-performance thermoelectrics.
Citation
Overy, A. R., Cairns, A. B., Cliffe, M. J., Simonov, A., Tucker, M. G., & Goodwin, A. L. (2016). Design of crystal-like aperiodic solids with selective disorder–phonon coupling. Nature Communications, 7, Article 10445. https://doi.org/10.1038/ncomms10445
Journal Article Type | Article |
---|---|
Acceptance Date | Dec 11, 2015 |
Online Publication Date | Feb 4, 2016 |
Publication Date | Feb 4, 2016 |
Deposit Date | Dec 20, 2018 |
Publicly Available Date | Jan 22, 2019 |
Journal | Nature Communications |
Publisher | Nature Publishing Group |
Peer Reviewed | Peer Reviewed |
Volume | 7 |
Article Number | 10445 |
DOI | https://doi.org/10.1038/ncomms10445 |
Keywords | General Biochemistry, Genetics and Molecular Biology; General Physics and Astronomy; General Chemistry |
Public URL | https://nottingham-repository.worktribe.com/output/1431420 |
Publisher URL | https://www.nature.com/articles/ncomms10445 |
Contract Date | Jan 22, 2019 |
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Design of crystal-like aperiodic solids with selective disorder–phonon coupling
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Publisher Licence URL
https://creativecommons.org/licenses/by/4.0/
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