Journal
PHYSICAL REVIEW LETTERS
Volume 101, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.157006
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Funding
- Russian Academy of Sciences
- Russian Foundation for Basic Research [06-02-16704]
- U. S. Department of Energy Office of Science [DE-AC02-06CH11357]
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Scanning tunneling spectroscopy at very low temperatures on homogeneously disordered superconducting titanium nitride thin films reveals strong spatial inhomogeneities of the superconducting gap Delta in the density of states. Upon increasing disorder, we observe suppression of the superconducting critical temperature T-c towards zero, enhancement of spatial fluctuations in Delta, and growth of the Delta/T-c ratio. These findings suggest that local superconductivity survives across the disorder-driven superconductor-insulator transition.
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