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True superconductivity in a two-dimensional superconducting-insulating system

Nadya Mason, Aharon Kapitulnik

DOI 10.1103/PhysRevB.64.060504 · Physical Review B

T1

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Abstract

We present results on disordered amorphous films which are expected to undergo a field-tuned superconductor-insulator transition. Based on resistance and I−V characteristics, we find evidence of a low field metal-to-superconductor transition. This transition is characterized by a rapid drop in resistance and discontinuities in the I−V curves. The metallic phase just above the transition seems to be an unusual, non-Fermi metal and the superconducting phase seems to be a true zero resistance state.

Source-reported materials — not catalogue approval

FormulaReported Tc (K)Pressure (GPa)Type
Mo43Ge57

Archive — visibility unverified

Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

0.5Pressure not reportedunknown
Mo43Ge57

Archive — visibility unverified

Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

1Pressure not reportedunknown
Mo43Ge57

Archive — visibility unverified

Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

1.1Pressure not reportedunknown

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