This article has an erratum: [erratum]
Volume 59, Number 1, July 2002
|Page(s)||121 - 127|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 June 2002|
Experimental evidence for a small s-wave component in the order parameter of underdoped
Physics Department, Technion-Israel Institute of Technology -
Haifa, 32000, Israel
Corresponding author: firstname.lastname@example.org
Accepted: 15 April 2002
We report conductance measurements in underdoped tunneling junctions of the ramp type, oriented along different directions in the ab plane. We find that the -wave gap is suppressed in the region near the node, but has a non-zero value of at the node. This result supports the existence of a sub-dominant is component in the order parameter of underdoped .
PACS: 74.20.Rp – Pairing symmetries (other than s-wave) / 74.50.+r – Proximity effects, weak links, tunneling phenomena, and Josephson effects / 74.72.Bk – Y-based cuprates
© EDP Sciences, 2002
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