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Multiple crossing points and possible quantum criticality in the magnetoresistance of thin TiN films

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Kronfeldner, Klaus ; Baturina, Tatyana I. ; Strunk, Christoph
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Date of publication of this fulltext: 11 Jun 2021 05:06


We have measured R(T, B) of a TiN thin film very close to the disorder-driven superconductor-insulator transition but still superconducting at zero field and low temperatures. In a magnetic field we find that three distinct crossing points of the magnetoresistance isotherms occur at magnetic fields B-cX in three different temperature regions. Each crossing point in R(T, B) corresponds to a ...


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