Abstract
The seminal work by Dolan and Osheroff [Phys. Rev. Lett. 43, 721 (1979)], which reported anomalous low-temperature conduction of high-resistivity thin-film metal strips is reanalyzed. It is argued that the observed logarithmic increase of resistance with decreasing temperature in their 3 nm thick Au–Pd strips can be ascribed to the granularity effect on electron conduction in discontinuous metal films. This reanalysis is further supported by the measurements on conducting Pbx(SiO2)1−x nanogranular films, where x is the volume fraction of Pb.
Original language | English |
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Journal | Physica Status Solidi (B) Basic Research |
DOIs | |
State | Accepted/In press - 2022 |
Keywords
- electrical transport
- electron–electron interaction
- granular metals
- metal–insulator transition
- quantum correction
- weak-localization effect