Zero-bias conductance and energy gap measurements in LaNiO3-YBa2Cu3O7-x junctions

Kumar, D and Satyalakshmi, KM and Hegde, MS and Singh, Rajiv K and Apte, PR and Pinto, R and Lee, Clinton B (1998) Zero-bias conductance and energy gap measurements in LaNiO3-YBa2Cu3O7-x junctions. In: Superconductor science and technology, 11 (8). pp. 766-769.

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Abstract

Conductance measurements of junctions between a high- superconductor and a metallic oxide have been carried out along the a-b plane to examine the tunnel-junction spectra. For these measurements, in situ films have been grown on c-axis oriented thin films using the pulsed laser deposition technique. Two distinctive energy gaps have been observed along with conductance peaks around zero bias. The analysis of zero-bias conductance and energy gap data suggests the presence of midgap states located at the centre of a finite energy gap. The results obtained are also in accordance with the d-wave nature of high- superconductors.

Item Type:	Journal Article
Publication:	Superconductor science and technology
Publisher:	IOP Publishing
Additional Information:	Copyright of this article belongs to IOP Publishing.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	23 Mar 2009 04:57
Last Modified:	19 Sep 2010 05:29
URI:	http://eprints.iisc.ac.in/id/eprint/19601

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