Superconductivity in Bi observed with point contacts
O. I. ShklyarevskiǐResearch Institute for Materials, University of Nijmegen, Toernooiveld, 6525 ED Nijmegen, The NetherlandsA.M. DuifResearch Institute for Materials, University of Nijmegen, Toernooiveld, 6525 ED Nijmegen, The NetherlandsA. G. M. JansenResearch 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
1986en
ABI
Аннотация
Point contacts with the semimetal Bi show a nonlinear structure in the current-voltage characteristics at liquid-helium temperatures. Because of the dependence on temperature and magnetic field this anomalous structure is ascribed to the presence of superconducting clusters (\ensuremath{\sim}100 nm) at the surface of Bi. In point contacts with deformed and undeformed Bi two different superconducting phases of Bi are observed.
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