ISIS Neutron and Muon Source Data Journal

Multi-phonon scattering and anharmonicity in zinc oxide

Abstract: Understanding the thermal conductivity of zinc oxide is of central importance in assessing its potential for a wide variety of applications in optoelectronics, power electronics and thermoelectric devices. Our single-crystal INS studies on LET demonstrate that we are able to model the one-phonon scattering using DFT and to measure the energy broadening from phonon-phonon scattering. Our powder INS studies on MARI reveal a red-shift in the multi-phonon scattering that is the signature of anharmonicity. We now propose to study the multi-phonon scattering by single-crystal INS using the MERLIN spectrometer. Our results will be the most direct test possible of the anharmonic corrections to the DFT. We expect to obtain a deeper understanding of anharmonicity in general, and the temperature dependence of the thermal conductivity of this technologically important material in particular.

Principal Investigator: Professor Jon Goff
Experimenter: Mr Chris Nuttall
Experimenter: Dr Uthayakumar Sivaperumal
Experimenter: Dr David Voneshen
Experimenter: Dr Rob Potter
Experimenter: Mr Tim Lehner
Local Contact: Dr Helen Walker
Experimenter: Dr Keith Refson
Experimenter: Mr Samuel Di-Folco
Experimenter: Mr Jack Kulke

DOI: 10.5286/ISIS.E.RB1720138

ISIS Experiment Number: RB1720138

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Jon Goff et al; (2017): Multi-phonon scattering and anharmonicity in zinc oxide, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1720138

Data is released under the CC-BY-4.0 license.