Granular Effect on Electron Conduction in Discontinuous Metal Films

Juhn Jong Lin*, Zhi Qing Li, Chih Yuan Wu, Sheng Shiuan Yeh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


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 languageEnglish
JournalPhysica Status Solidi (B) Basic Research
StateAccepted/In press - 2022


  • electrical transport
  • electron–electron interaction
  • granular metals
  • metal–insulator transition
  • quantum correction
  • weak-localization effect


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