Direct Observation of Andreev Reflection
P. A. M. BenistantResearch Institute for Materials, University of Nijmegen, Toernooiveld, 6525 ED Nijmegen, The NetherlandsH. van KempenResearch Institute for Materials, University of Nijmegen, Toernooiveld, 6525 ED Nijmegen, The NetherlandsP. WyderResearch Institute for Materials, University of Nijmegen, Toernooiveld, 6525 ED Nijmegen, The Netherlands
1983en
ABI
Abstract
An experiment is presented which allows the direct observation of the reflection of conduction electrons in a normal metal at a normal-metal-superconductor interface (Andreev reflection). The experimental findings are in agreement with a change of the quasi-particle-excitation branch on reflection (electron-hole transition). The Andreev-reflection probability can be estimated from the experimental results.
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