The origin of the lattice thermal conductivity enhancement at the ferroelectric phase transition in GeTe

Abstract The proximity to structural phase transitions in IV-VI thermoelectric materials is one of the main reasons for their large phonon anharmonicity and intrinsically low lattice thermal conductivity κ. However, the κ of GeTe increases at the ferroelectric phase transition near 700 K. Using firs...

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Auteurs principaux: Đorđe Dangić, Olle Hellman, Stephen Fahy, Ivana Savić
Format: article
Langue:EN
Publié: Nature Portfolio 2021
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Accès en ligne:https://doaj.org/article/67dbfa3c7c8a47f2869661a88dbccbac
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