The origin of incipient ferroelectricity in lead telluride

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dc.contributor.author Jiang, M. P.
dc.contributor.author Trigo, M.
dc.contributor.author Savić, Ivana
dc.contributor.author Fahy, Stephen B.
dc.contributor.author Murray, Éamonn D.
dc.contributor.author Bray, C.
dc.contributor.author Clark, J.
dc.contributor.author Henighan, T.
dc.contributor.author Kozina, M.
dc.contributor.author Chollet, M.
dc.contributor.author Glownia, J. M.
dc.contributor.author Hoffmann, M. C.
dc.contributor.author Zhu, D.
dc.contributor.author Delaire, O.
dc.contributor.author May, A. F.
dc.contributor.author Sales, B. C.
dc.contributor.author Lindenberg, Aaron M.
dc.contributor.author Zalden, P.
dc.contributor.author Sato, T.
dc.contributor.author Merlin, R.
dc.contributor.author Reis, D. A.
dc.date.accessioned 2017-06-28T15:25:57Z
dc.date.available 2017-06-28T15:25:57Z
dc.date.issued 2016-07-22
dc.identifier.citation Jiang, M. P., Trigo, M., Savić, I., Fahy, S., Murray, É. D., Bray, C., Clark, J., Henighan, T., Kozina, M., Chollet, M., Glownia, J. M., Hoffmann, M. C., Zhu, D., Delaire, O., May, A. F., Sales, B. C., Lindenberg, A. M., Zalden, P., Sato, T., Merlin, R. and Reis, D. A. (2016) 'The origin of incipient ferroelectricity in lead telluride', 7, 12291. doi:10.1038/ncomms12291 en
dc.identifier.volume 7 en
dc.identifier.startpage 12291-1 en
dc.identifier.endpage 12291-9 en
dc.identifier.issn 2041-1723
dc.identifier.uri http://hdl.handle.net/10468/4202
dc.identifier.doi 10.1038/ncomms12291
dc.description.abstract The interactions between electrons and lattice vibrations are fundamental to materials behaviour. In the case of group IV–VI, V and related materials, these interactions are strong, and the materials exist near electronic and structural phase transitions. The prototypical example is PbTe whose incipient ferroelectric behaviour has been recently associated with large phonon anharmonicity and thermoelectricity. Here we show that it is primarily electron-phonon coupling involving electron states near the band edges that leads to the ferroelectric instability in PbTe. Using a combination of nonequilibrium lattice dynamics measurements and first principles calculations, we find that photoexcitation reduces the Peierls-like electronic instability and reinforces the paraelectric state. This weakens the long-range forces along the cubic direction tied to resonant bonding and low lattice thermal conductivity. Our results demonstrate how free-electron-laser-based ultrafast X-ray scattering can be utilized to shed light on the microscopic mechanisms that determine materials properties. en
dc.description.sponsorship United States Department of Energy (Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division, under Contract DE-AC02-76SF00515; Early Career Research Program); Science Foundation Ireland (Grant No. 12/1A/1601) Science Foundation Ireland and Marie Curie Action COFUND (Starting Investigator Research Grant 11/SIRG/E2113); Volkswagen Foundation en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Nature Publishing Group en
dc.rights © The Authors 2016. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ en
dc.rights.uri http://creativecommons.org/licenses/by/4.0/ en
dc.subject Electronic properties and materials en
dc.subject Ferroelectrics and multiferroics en
dc.subject Phase transitions and critical phenomena en
dc.title The origin of incipient ferroelectricity in lead telluride en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Stephen B. Fahy, Physics, University College Cork, Cork, Ireland. +353-21-490-3000 Email: s.fahy@ucc.ie en
dc.internal.availability Full text available en
dc.date.updated 2017-06-28T15:13:35Z
dc.description.version Published Version en
dc.internal.rssid 372345649
dc.internal.wokid 000380843300001
dc.contributor.funder U.S. Department of Energy en
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder H2020 Marie Skłodowska-Curie Actions en
dc.contributor.funder European Commission en
dc.contributor.funder Volkswagen Foundation, Germany en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Nature Communications en
dc.internal.copyrightchecked No !!CORA!! en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress s.fahy@ucc.ie en


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© The Authors 2016. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ Except where otherwise noted, this item's license is described as © The Authors 2016. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
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