Charge and Heat Transport in Polycrystalline Metallic Nanostructures

Autor:	Takahashi Koji, Fujii Motoo, Zhang Xing
Rok vydání:	2008
Předmět:	Materials science Thermal conductivity Condensed matter physics Metallic nanostructures General Physics and Astronomy Charge (physics) Grain boundary Crystallite Electrical conductor
Zdroj:	Chinese Physics Letters. 25:3360-3363
ISSN:	1741-3540 0256-307X
DOI:	10.1088/0256-307x/25/9/071
Popis:	Metals are typically good conductors in which the abilities to transport charge and to transport heat can be related through the Wiedemann–Franz law. Here we report on an abnormal charge and heat transport in polycrystalline metallic nanostructures in which the ability to transport charge is weakened more obviously than that to transport heat. We attribute it to the influence of the internal grain boundaries and have formulated a novel relation to predict the thermal conductivity. The Wiedemann–Franz law is then modified to account for the influence of the grain boundaries on the charge and heat transport with the predictions now agreeing well with the measured results.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::942629d9f57467c280132fd34b121e7b https://doi.org/10.1088/0256-307x/25/9/071 Zobrazit plný text záznamu