| Issue |
Europhys. Lett.
Volume 44, Number 5, December I 1998
|
|
|---|---|---|
| Page(s) | 648 - 654 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1998-00521-4 | |
| Published online | 01 September 2002 | |
Magnetic-field dependence of the zero-bias conductance peak observed in 
junctions
Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506-0055, USA
Received:
23
January
1998
Accepted:
14
October
1998
Recently, a lot of interest has been generated on the behavior of the
zero-bias conductance peak (ZBCP) observed in high-Tc
superconductor tunnel junctions. It is believed that the properties of
the ZBCP suggest the pairing symmetry of the superconductor. The ZBCP
shows interesting responses with temperature and applied fields. In
this paper we report results of measurements of the ZBCP up to a
magnetic field of 5 tesla. Many of our junctions use a Pb film as
the counter electrode, which is superconducting when 
and 
. This provides us with a unique
opportunity for studying the interaction between superconductors with
different pairing symmetry.
PACS: 73.40.Gk – Tunneling / 74.50.+r – Proximity effects, weak links, tunneling phenomena, and Josephson effects / 74.80.Fp – Point contacts; SN and SNS junctions
© EDP Sciences, 1998
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