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About Overview Organization & Management Strategy Open Positions Movie Library Access Research Structure Researchers & Laboratories Research Areas Three Advanced Target Projects Collaboration Achievements Press Releases Media & Award AIMResearch Publications Topics News Seminars & Symposium International Satellites International Partner Institutions Inter-Faculty Exchange Agreements Researcher Exchange Programs Support Support Systems For International Researchers (IAC) For Visitors Researchers for Visitors for Researchers for Enterprise Access AIMR Fund Japanese Research Highlights Ferroelectric materials: Unveiling the “ferron” quasiparticle 12/11/2023 Insights into the dynamic transport of ferroelectric polarization Dr. Tang (left) and Dr. Bauer discussing their research The unusual complexity of ferroelectric materials (FEMs) makes their fabrication, characterization, and modeling challenging. Unlike their magnetic counterparts, whose dynamic and transport properties whose physics are well understood through the magnon quasiparticles, FEMs and the corresponding “ferron” quasiparticle concept remain relatively unexplored. “Theoretical work on the dynamics of FEMs often focuses on the harmonic regime of these materials,” explains Ping Tang, a member of an AIMR research team. “This practice neglects the non-linearity in the equations of motion unique to ferroelectric polarization, completely missing the ferron concept.” In a 2022 article, Tang, Bauer et al. addressed this discrepancy by systematically including the anharmonicity in displacive FEMs to capture the elusive ferrons1. Using the Landau-Ginzburg-Devonshire theory, the team calculated the static electric dipole carried by a ferron, analogous to the spin or magnetic moment carried by a magnon in magnetic materials. Further, the identification of the ferron excitations that carry both heat and electric dipole currents opened the path to predicting FEM properties, including low-temperature pyroelectric and electrocaloric coefficients, the Peltier and Seebeck coefficients, field-dependent thermal conductivity, and ferron drag thermoelectricity in ferroelectric van der Waals heterostructures. “Until recently, researchers have paid little attention to the dynamic transport properties of FEMs,” says Tang. “By producing the first descriptions of ferrons, we hope to kick-start the new field of ‘ferronics’ to close the gap with the magnetic materials’ head start.” A future direction will involve collaboration with the National Institute for Materials Science in Tsukuba, aiming for further experimental observation of ferron excitations. (Author: Patrick Han) References Tang, P., Iguchi, R., Uchida, K. & Bauer, G.E.W. Excitations of the ferroelectric order Physical Review B 106, L081105 (2022). | article This research highlight has been approved by the authors of the original article and all information and data contained within has been provided by said authors. keywords ferroelectric materials ferron quasiparticles transport of ferroelectric polarization Landau-Ginzburg-Devonshire theory anharmonicity Tweet more Research Highlights Achievements Press Releases 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 Media & Award 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 AIMResearch About AIMResearch Research Highlights 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 In the Spotlight 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 Email Alert Sign up Publications Headlines 2024/05/31 Dr. Yi Shuang selected to receive a Hara... 2024/05/22 Machine Learning Accelerates Discovery o... 2024/05/16 New Data-Driven Model Rapidly Predicts D... Seminars & Symposium 2024/05/01 [5/1] The 5th “AIMR Seminar” 2024/04/26 [4/26] The 4th “AIMR Seminar” [5/10] The 6th “AIMR Seminar” AIMResearch PDF Research Highlights 2021 Download a FREE PDF of AIMResearch 2021 Download previous issue AIMResearch 2021 AIMResearch 2020 AIMResearch 2019 AIMResearch 2018 AIMResearch 2017 AIMResearch 2016 AIMResearch 2015 AIMResearch 2014 AIMResearch 2013 AIMResearch 2012 AIMResearch 2011 AIMResearch 2010 AIMResearch 2009 Home Research AIMResearch Research Highlights 2023 Ferroelectric materials: Unveiling the “ferron” quasiparticle TOHOKU UNIVERSITY World Premier International Research Center Initiative For AIMR Members Link Site map Copyright © 2020 Tohoku University. All Rights Reserved.