Superconducting Proximity Effect in the Native Inversion Layer on InAs
- 3 June 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 54 (22), 2449-2452
- https://doi.org/10.1103/physrevlett.54.2449
Abstract
A superconducting proximity effect existing in a two-dimensional electron gas in the native inversion layer on a -type InAs substrate has been confirmed. A supercurrent in the inversion layer was observed for the first time, in addition to an ac Josephson effect, with superconducting electrodes separated by 0.2-0.5 μm. The coherence lengths obtained coincide well with each other, both experimentally and theoretically. A junction with a metal gate electrode showed the controllability of the supercurrent by the gate voltage.
Keywords
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