Physics – Condensed Matter – Superconductivity
Scientific paper
2004-10-19
Physica B 359-361 (2005) 469-472.
Physics
Condensed Matter
Superconductivity
2 pages, 4 figs., presented on SCES`04 (26-30 July, Karlsruhe, Germany), accepted for publication
Scientific paper
10.1016/j.physb.2005.01.102
An overview on recent efforts in point-contact (PC) spectroscopy of title superconductors is given. Distinct phonon features and crystalline-electric-field effects are observed in PC spectra of HoNi2B2C. Results of study of superconducting (SC) gap and excess current versus temperature and magnetic field reflecting specific multi-band electronic structure in MgB2 are presented. The nature of the extremely nonlinear I(V) curves in the antiferromagnetic (AF) and SC state are elucidated for UPd2Al3 break-junctions and MgCNi3 point contacts.
Behr Günter
Drechsler Stefan-Ludwig
Fuchs Guenter
Gloos Kurt
Kvitnitskaya O. E.
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