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arXiv · 2207.02304

Granular Effect on Electron Conduction in Discontinuous Metal Films

Juhn-Jong Lin·Zhi-Qing Li·Chih-Yuan Wu·Sheng-Shiuan Yeh
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Abstract

We reanalyze the seminal work by Dolan and Osheroff [Phys. Rev. Lett. $\textbf{43}$, 721 (1979)] which reported anomalous low-temperature conduction of high-resistivity thin-film metal strips. We argue that the observed logarithmic increase of resistance with decreasing temperature in their 3-nm-thick Au-Pd strips be ascribed to the granularity effect on electron conduction in discontinuous metal films. This reanalysis is further supported by our measurements on conducting Pb$_x$(SiO$_2$)$_{1-x}$ nanogranular films, where $x$ is the volume fraction of Pb.

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Juhn-Jong Lin, Zhi-Qing Li, Chih-Yuan Wu, Sheng-Shiuan Yeh. 2022-07-04. Granular Effect on Electron Conduction in Discontinuous Metal Films. https://doi.org/10.1002/pssb.202200346

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