2000/05/24 by Assa Auerbach, Auerbach, Assa, Ehud Altman +1
Physics and Astronomy · #FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el) #Superconductivity (cond-mat.supr-con) #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.cond-mat/0005420
4 pages, 3 EPS figures
arxiv created 2000/06/11 · arxiv updated 2009/11/30
The projected SO(5) theory (pSO(5)) is used to resolve the puzzle of two distinct energy gaps in high Tc Superconductor-Normal-Superconductor junctions. Counter to conventional theory of multiple Andreev reflections (MAR), the differential resistance peaks are associated with the antiferromagnetic resonance observed in neutron scattering, and not with Cooper pair breaking. The pSO(5) and MAR theories differ by the expected tunneling charges at the peaks. We propose that shot noise experiments could discriminate against the conventional interpretation.