Physics – Condensed Matter – Superconductivity
Scientific paper
2001-07-13
J. Phys. Chem. Solids 63, 2369 (2002)
Physics
Condensed Matter
Superconductivity
4 pages, 5 eps figures, 1 table. SNS 2001 Conference
Scientific paper
We made point-contact measurements with Au tips on La_{2-x}Sr_{x}CuO_{4} samples with 0.08 < x < 0.20 to investigate the relationship between superconducting gap and pseudogap. We obtained junctions whose conductance curves presented typical Andreev reflection features at all temperatures from 4.2 K up to T_c^A close to the bulk T_c. Their fit with the BTK-Tanaka-Kashiwaya model gives good results if a (s+d)-wave gap symmetry is used. The doping dependence of the low temperature dominant isotropic gap component Delta_{s} follows very well the T_{c} vs. x curve. These results support the separation between the superconducting (Andreev) gap and the pseudogap measured by angle-resolved photoemission spectroscopy (ARPES) and tunneling.
Calzolari Arrigo
Daghero Dario
Ferretti Marco
Gonnelli Renato S.
Natale L.
No associations
LandOfFree
Andreev reflection in Au/La_{2-x}Sr_{x}CuO_{4} point-contact junctions: separation between pseudogap and phase-coherence gap does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Andreev reflection in Au/La_{2-x}Sr_{x}CuO_{4} point-contact junctions: separation between pseudogap and phase-coherence gap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Andreev reflection in Au/La_{2-x}Sr_{x}CuO_{4} point-contact junctions: separation between pseudogap and phase-coherence gap will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-140927