Competition of multiband superconducting and magnetic order in ErNi2B2C observed by Andreev reflection

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dc.creatorBobrov, N. L.
dc.creatorChernobay, V. N.
dc.creatorNaidyuk, Yu. G.
dc.creatorTyutrina, L. V.
dc.creatorNaugle, D. G.
dc.creatorRathnayaka, K. D. D.
dc.creatorBud`ko, S. L.
dc.creatorCanfield, P. C.
dc.creatorYanson, I. K.
dc.date2008-06-09
dc.date.accessioned2026-07-07T12:58:46Z
dc.date.available2026-07-07T12:58:46Z
dc.descriptionPoint contacts (PC) Andreev reflection dV/dI spectra for the antiferromagnetic (T_N =6K) superconductor (Tc=11K) ErNi2B2C have been measured for the two main crystallographic directions. Observed retention of the Andreev reflection minima in dV/dI up to Tc directly points to unusual superconducting order parameter (OP) vanishing at Tc. Temperature dependence of OP was obtained from dV/dI using recent theory of Andreev reflection including pair-breaking effect. For the first time existence of a two superconducting OPs in ErNi2B2C is shown. A distinct decrease of both OPs as temperature is lowered below T_N is observed.
dc.description5 pages, 5 figs, to be published in Europhys. Lett
dc.identifierhttps://arxiv.org/abs/0806.1456
dc.identifierhttp://arxiv.org/abs/0806.1456
dc.identifierEurophysics Letters, 83 (2008) 37003
dc.identifierdoi:10.1209/0295-5075/83/37003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/225355
dc.subjectSuperconductivity
dc.titleCompetition of multiband superconducting and magnetic order in ErNi2B2C observed by Andreev reflection
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