Superconductivity in Bismuth Observed With Point Contacts

Point contacts with the semimetal bismuth 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 ( approx 100 nm) at...

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Bibliographic Details
Published in:Physical review. B, Condensed matter Condensed matter, 1986-08, Vol.34 (3), p.1956-1959
Main Authors: Shklyarevskii, O I, Duif, A M, Jansen, A G M, Wyder, P
Format: Article
Language:English
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Summary:Point contacts with the semimetal bismuth 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 ( approx 100 nm) at the surface of Bi. In point contacts with deformed and undeformed Bi two different superconducting phases of Bi are observed. 13 ref.--AA
ISSN:0163-1829