Andreev Peaks and Massive Magnons in Cuprate SNS junctions

Details Andreev Peaks and Massive Magnons in Cuprate SNS junctions Andreev Peaks and Massive Magnons in Cuprate SNS junctions

2000-05-24

arxiv.org/abs/cond-mat/0005420v2

Physics

Condensed Matter

Superconductivity

4 pages, 3 EPS figures

Scientific paper

The projected SO(5) theory (pSO(5)) is used to resolve the puzzle of two distinct energy gaps in high T$_c$ 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.

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