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Indium-Impregnated Porous Glass: Magnetotransport and Superconducting Transition

  • M. J. Graf (a1), C. A. Huber (a2), T. E. Huber (a3) and A. P. Salzberg (a4)

Abstract

Measurements of the resistive superconducting transition and magnetoresistance of indium metal in the restricted geometry of 50 Å size porous Vycor glass are reported. We have mapped out the upper critical magnetic field versus temperature phase diagram for these transitions for fields up to 20 T and temperatures down to 100 mK. The results are consistent with magnetization measurements by previous authors and can be generally interpreted in terms of the description of inhomogeneous type-II superconductors. The field-induced resistive transitions exhibit unusual behavior not probed by previous bulk-type measurements which may be related to the microstructure of the composite.

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Indium-Impregnated Porous Glass: Magnetotransport and Superconducting Transition

  • M. J. Graf (a1), C. A. Huber (a2), T. E. Huber (a3) and A. P. Salzberg (a4)

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