Andreev reflection in Bi1.8Pb0.3Sr1.9Ca2Cu3Ox break junction
D. M. Gokhfeld, D. A. Balaev, K. A. Shaykhutdinov, S. I. Popkov, M. I. Petrov
Abstract
The current-voltage characteristic (CVC) of break junction made from polycrystalline Bi1.8Pb0.3Sr1.9Ca2Cu3Ox is investigated. The experimental CVC has hysteretic feature that reflects a part of a curve with negative differential resistance. The CVC is discussed within the framework of the Kummel-Gunsenheimer-Nicolsky theory considering multiple Andreev reflections in superconductor/normal-metal/superconductor junctions.
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