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Superconductive proximity-effects in Nb on InGaAs-based heterostructures

✍ Scribed by L.H. Greene; A. Kastalsky; J.B. Barner; R. Bhat

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
415 KB
Volume
165-166
Category
Article
ISSN
0921-4526

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✦ Synopsis

Experimental data on proximity-effects in Nb on InGaAs-based heterostructures are presented. The thickness of the top InGaAs layer is varied and superconducting parameters of this proximity-induced superconducting layer are determined by tunneling spectroscopy across a InGaAs/lnP/lnGaAs heterostructure. Penetration of Cooper pairs through a thinned Schottky barrier at the Nb/lnGaAs interface is directly evidenced by separate experiments of lateral geometry. Extending our research into proximityinduced SIN -SIS' Josephson junction tunneling with other semiconductors and metals is discussed.

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