CaltechAUTHORS
  A Caltech Library Service

Anharmonicity-induced phonon broadening in aluminum at high temperatures

Tang, Xiaoli and Li, Chen W. and Fultz, B. (2010) Anharmonicity-induced phonon broadening in aluminum at high temperatures. Physical Review B, 82 (18). Art. No. 184301. ISSN 1098-0121. http://resolver.caltech.edu/CaltechAUTHORS:20101206-143055391

[img]
Preview
PDF - Published Version
See Usage Policy.

2577Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20101206-143055391

Abstract

Thermal phonon broadening in aluminum was studied by theoretical and experimental methods. Using second-order perturbation theory, phonon linewidths from the third-order anharmonicity were calculated from first-principles density-functional theory (DFT) with the supercell finite-displacement method. The importance of all three-phonon processes were assessed and individual phonon broadenings are presented. The good agreement between calculations and prior measurements of phonon linewidths at 300 K and new measurements of the phonon density of states to 750 K indicates that the third-order phonon-phonon interactions calculated from DFT can account for the lifetime broadenings of phonons in aluminum to at least 80% of its melting temperature.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevB.82.184301DOIArticle
http://prb.aps.org/abstract/PRB/v82/i18/e184301PublisherArticle
ORCID:
AuthorORCID
Fultz, B.0000-0002-6364-8782
Additional Information:© 2010 American Physical Society. Received 19 October 2010; published 3 November 2010. This work was supported by DOE BES under Contract No. DE-FG02-03ER46055. The work benefited from software developed in the DANSE project under NSF under © 2010 Award No. DMR-0520547. The research at Oak Ridge National Laboratory’s Spallation Neutron Source was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, DOE.
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG02-03ER46055
NSFDMR-0520547
Classification Code:PACS: 63.20.kg, 63.20.dk, 78.70.Nx
Record Number:CaltechAUTHORS:20101206-143055391
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20101206-143055391
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21195
Collection:CaltechAUTHORS
Deposited By: Benjamin Perez
Deposited On:07 Dec 2010 16:59
Last Modified:08 Jan 2017 00:44

Repository Staff Only: item control page