Evidence of Inhomogeneous Superconductivity in FeTe${}_{1-x}$Se${}_x$ Thin Film Using Scotch-Tape Method

Abstract

We have fabricated thin films of FeTe${}_{1-x}$Se${}_x$ using a scotch-tape method. The superconductivities of the thin films are different from each other although these films were fabricated from the same bulk sample. The result clearly presents the inhomogeneous superconductivity in FeTe${}_{1-x}$Se${}_x$. The difference comes from inhomogeneity due to the excess Fe concentration. The resistivity of a thin film with low excess Fe shows good superconductivity with the sharp superconducting-transition width and more isotropic superconductivity.

11 pages, 3 figures

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Cited by in corpus (4)

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• Fermiological Interpretation of Superconductivity/Non-superconductivity of FeTe_{1-x}Se_{x} Thin Crystal Determined by Quantum Oscillation Measurement
• Removal of excess iron by annealing processes and emergence of bulk superconductivity in sulfur-substituted FeTe