Point-contact spectroscopy of the nickel borocarbide superconductors RNi2B2C (R=Y, Dy, Ho, Er, Tm, Lu)

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dc.creatorNaidyuk, Yu. G.
dc.creatorBashlakov, D. L.
dc.creatorBobrov, N. L.
dc.creatorChernobay, V. N.
dc.creatorKvitnitskaya, O. E.
dc.creatorYanson, I. K.
dc.creatorBehr, G.
dc.creatorDrechsler, S. -L.
dc.creatorFuchs, G.
dc.creatorSouptel, D.
dc.creatorNaugle, D. G.
dc.creatorRathnayaka, K. D. D.
dc.creatorRoss Jr, J. H.
dc.date2006-09-29
dc.date.accessioned2026-07-07T08:26:28Z
dc.date.available2026-07-07T08:26:28Z
dc.descriptionAn overview of the recent efforts in point-contact (PC) spectroscopy of the nickel borocarbide superconductors RNi2B2C in the normal and superconducting (SC) state is given. The results of measurements of the PC electron- boson(phonon) interaction spectral function are presented. Phonon maxima and crystalline-electric-field (CEF) excitations are observed in the PC spectra of compounds with R=Dy, Ho, Er and Tm, while for R=Y a dominant phonon maximum around 12 meV is characteristic. Additionally, non-phonon and non-CEF maxima are observed near 3 meV in R=Ho and near 6 meV in R=Dy. Directional PC study of the SC gap gives evidence for the multi-band nature of superconductivity in R=Y, Lu. At low temperature the SC gap in R=Ho exhibits a standard single-band BCS-like dependence, which vanishes above T_c^*= 5.6K< T_c=8.5K, where a specifc magnetic ordering starts to play a role. For R=Tm (T_c=10.5 K) a decrease of the SC gap is observed below 5 K.
dc.description7 figs, 4 pages, presented on M2S-HTSC Conference, July 9-14, 2006, Dresden
dc.identifierhttps://arxiv.org/abs/cond-mat/0609771
dc.identifierhttp://arxiv.org/abs/cond-mat/0609771
dc.identifierPhysica C 460-462 (2007) 107-110.
dc.identifierdoi:10.1016/j.physc.2007.03.166
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/136950
dc.subjectSuperconductivity
dc.titlePoint-contact spectroscopy of the nickel borocarbide superconductors RNi2B2C (R=Y, Dy, Ho, Er, Tm, Lu)
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