Electron Localization and Superconductivity of Very Thin Epitaxially Grown Ag Films on Ge(001).
CALIFORNIA UNIV LOS ANGELES
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Transport properties of very thin 2.5 monolayer films of Ag epitaxially grown on clean Ge001 substrates are reported. The films consists of a monolayer coverage plus isolated three-dimensional islands. Below approx. 70 K, the conductivity is dominated by the metal film and displays the temperature and electric and magnetic field dependences characteristic of metallic weak localization in two dimensions. Below approx. 2 K, the resistance drops rapidly in a manner resembling an incomplete superconducting transition. The resistance is restored by application of a magnetic field of approx. 20 K Gauss 0.6 K. Author
- Electricity and Magnetism