| Issue |
Europhys. Lett.
Volume 33, Number 6, February III 1996
|
|
|---|---|---|
| Page(s) | 483 - 488 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1996-00367-8 | |
| Published online | 01 September 2002 | |
Two superconducting states of HoNi2B2C as seen by Andreev reflection in point-contacts
1
High
Magnetic Field Laboratory, Max-Planck-Institut für Festkörperforschung,
Centre
National de la Recherche Scientifique - B.P. 166, F-38042 Grenoble Cedex 9, France
2
B. Verkin Institute for Low Temperature Physics and Engineering,
47 Lenin Avenue, 310164
Kharkov, Ukraine
3
Department of Physics, University of Warwick - Coventry CV4 7AL, UK
Received:
11
August
1995
Accepted:
9
January
1996
Andreev-reflection spectra of superconducting-normal
contacts with 
show a continuous increase
of the superconducting order parameter
at the antiferromagnetic phase transition 
K without
re-entrant behaviour below the
superconducting critical temperature 
K.
A change is found in the superconducting ground state
at 
K (zero magnetic field),
and the magnetic-field–temperature phase diagram corresponding
to the two superconducting states is reconstructed.
PACS: 74.70.-b – Superconducting materials (excluding high-Tc cuprates) / 74.80.Fp – Point-contacts; SN and SNS junctions / 74.25.Dw – Phase diagrams
© EDP Sciences, 1996
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