Experimental investigation of two-dimensional InGe thin films

Leandro R. Tessler, Guy Deutscher

Research output: Contribution to journalArticlepeer-review

Abstract

We report low temperature measurements of the resistivity of two-dimensional inhomogeneous InGe thin films, prepared by electron beam co-deposition of the constituents onto a cold (77 K) substrate. Samples with a wide range of resistances (up to MΩ/□) were obtained. For In concentrations between 20 and 50 vol% a double superconducting transition is observed. Although the dependence of the resistivity on In concentration hints percolative behavior, the temperature dependence of the resistivity and the I-V curves can only be described by considering the vortex flow resistance and the Kosterlitz-Thouless transition.

Original languageEnglish
Pages (from-to)154-158
Number of pages5
JournalPhysica A: Statistical Mechanics and its Applications
Volume157
Issue number1
DOIs
StatePublished - 1 May 1989

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