Physics – Condensed Matter – Superconductivity
Scientific paper
2001-01-15
Eur. Phys. J. B 22, 411 (2001)
Physics
Condensed Matter
Superconductivity
4 pages, 4 eps figures, 1 table (RevTeX). Labels added to Fig. 1; Fig. 3 resized; references added; short discussion about bal
Scientific paper
10.1007/PL00011150
We present new Au/La_{2-x}Sr_{x}CuO_{4} (LSCO) point-contact conductance measures as a function of voltage and temperature in samples with 0.08 <= x <= 0.2. Andreev reflection features disappear at about the bulk Tc, giving no evidence of gap for T > Tc. The fit of the normalized conductance at any T < Tc supports a (s + d)-wave symmetry of the gap, whose dominant low-T s component follows the Tc(x) curve in contrast with recent angle-resolved photoemission spectroscopy and quasiparticle tunneling data. These results prove the separation between pseudogap and phase-coherence superconducting gap in LSCO at x <= 0.2.
Calzolari Arrigo
Daghero Dario
Ferretti Marco
Gonnelli Renato S.
Natale L.
No associations
LandOfFree
Evidence for pseudogap and phase-coherence gap separation by Andreev reflection experiments in Au/La_{2-x}Sr_{x}CuO_4 point-contact junctions 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 Evidence for pseudogap and phase-coherence gap separation by Andreev reflection experiments in Au/La_{2-x}Sr_{x}CuO_4 point-contact junctions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evidence for pseudogap and phase-coherence gap separation by Andreev reflection experiments in Au/La_{2-x}Sr_{x}CuO_4 point-contact junctions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-531300