par De Wilde, Yannick 
;Heil, Joachim;Jansen, Aloysius G. M.;Wyder, Peter;Deltour, Robert ;Assmus, Wolf;Meňovský, Alois;Sun, Wei ;Taillefer, Louis
Référence Physical review letters, 72, 14, page (2278-2281)
Publication Publié, 1994
;Heil, Joachim;Jansen, Aloysius G. M.;Wyder, Peter;Deltour, Robert ;Assmus, Wolf;Meňovský, Alois;Sun, Wei ;Taillefer, LouisRéférence Physical review letters, 72, 14, page (2278-2281)
Publication Publié, 1994
Article révisé par les pairs
| Résumé : | In a comparative Andreev-reflection study of normal-superconductor point contacts on the c plane of UPt3, CeCu2Si2, and URu2Si2 crystals at temperatures down to T=30 mK and in a magnetic field up to B=10 T, differences are found in the current-voltage characteristics. The behavior of the differential resistance dV/dI(V) of UPt3 is attributed to the presence of nodes in the superconducting order parameter Δ(k^) and is compared with theoretical predictions for the symmetry of the pairing state. The data for CeCu2Si2 and URu2Si2 point to the absence of zeros in Δ(k^). © 1994 The American Physical Society. |
