TY - JOUR
T1 - Experimental investigation of two-dimensional InGe thin films
AU - Tessler, Leandro R.
AU - Deutscher, Guy
N1 - Funding Information:
The authors acknowledge the help of Yossi Lereah with the electron microscopy.T his work was partially supportedb y the Oren Family Chair for Solid State Physics, by the US-Israel Binational Science Foundation and by the Gordon Center for Energy Studies. One of the authors (L.R.T.) is the recipient of a Helmuth Heineman Scholarship.
PY - 1989/5/1
Y1 - 1989/5/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=45149142911&partnerID=8YFLogxK
U2 - 10.1016/0378-4371(89)90292-6
DO - 10.1016/0378-4371(89)90292-6
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AN - SCOPUS:45149142911
VL - 157
SP - 154
EP - 158
JO - Physica A: Statistical Mechanics and its Applications
JF - Physica A: Statistical Mechanics and its Applications
SN - 0378-4371
IS - 1
ER -