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Browsing by Author "Goldman, Allen M"

Now showing 1 - 3 of 3
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    Indium Oxide Resistance Fluctuation Measurements
    (2021-07-19) Lewellyn, Nicholas A; Goldman, Allen M; goldman@umn.edu; Goldman, Allen M; Goldman Group
    For superconducting indium oxide films with higher disorder, a more conventional superconductor-insulator transition is observed. Low frequency resistance measurements performed on such a film are shown in this dataset. Contrary to initial expectations there were no significant changes in the noise properties near the quantum critical point. However, it was found that the noise varied in a way that was consistent with predictions based on a percolation model. Specifically, the noise properties suggest that the superconductor-insulator transition can be modeled by p-model percolation. This model is based on random Josephson junction array models which have been used extensively to explain the properties of granular superconductors.
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    Resistance versus temperature of an Indium Oxide thin film sample "b15c12" at various applied perpendicular magnetic field values
    (2019-03-14) Lewellyn, Nicholas A; Goldman, Allen M; goldman@umn.edu; Goldman, Allen, M
    Sheet resistance of a thin superconducting amorphous indium oxide film as a function of temperature and perpendicular magnetic field. Increasing field leads to the apparent destruction of the superconducting state and a transition to a metallic high field state.
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    Resistance vs Temperature of an Indium Oxide thin film sample "6.7E-5" at a range of magnetic fields
    (2019-01-09) Percher, Ilana M; Goldman, Allen M; goldman@umn.edu; Goldman, Allen M; Goldman Group; University of Minnesota Condensed Matter Group
    Sheet resistance of a thin superconducting amorphous indium oxide film as a function of temperature and perpendicular magnetic field. Increasing field leads to the apparent destruction of the superconducting state and a transition to a insulator-like high field state.