Thermal conductance of metallic atomic-size contacts: Phonon transport and Wiedemann-Franz law
J. C. Kl\"ockner, M. Matt, P. Nielaba, F. Pauly, J. C. Cuevas
TL;DR
This paper provides a comprehensive theoretical analysis of thermal conductance in atomic-scale metal contacts, focusing on phonon transport and the Wiedemann-Franz law, based on recent experimental findings.
Contribution
It introduces a detailed theoretical framework for understanding thermal conductance in atomic contacts of Au, Pt, and Al, expanding on recent experimental results.
Findings
Thermal conductance varies with metal type.
Phonon transport significantly influences conductance.
Wiedemann-Franz law applicability analyzed.
Abstract
Motivated by recent experiments [Science 355, 6330 (2017); Nat. Nanotechnol. 12, 430 (2017)], we present here an extensive theoretical analysis of the thermal conductance of atomic-size contacts made of three different metals, namely gold (Au), platinum (Pt) and aluminum (Al).
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