Point-Contact Spectroscopy on RuSr2GdCu2O8
Samanta Piano, Fabrizio Bobba, Filippo Giubileo, Antonio Vecchione,, Anna Maria Cucolo
TL;DR
This paper reports point-contact spectroscopy experiments on polycrystalline RuSr2GdCu2O8, revealing a zero-bias conductance peak consistent with d-wave pairing and analyzing magnetic field effects in granular samples.
Contribution
It provides experimental evidence of d-wave pairing symmetry in RuSr2GdCu2O8 through point-contact spectroscopy and explores magnetic field dependence in granular samples.
Findings
Zero-bias conductance peaks observed in tunneling spectra.
Spectra modeled assuming d-wave pairing symmetry.
Magnetic field dependence studied in stable junctions.
Abstract
We present Point-Contact experiments on polycrystalline RuSrGdCuO samples. The majority of tunneling curves shows a zero-bias conductance peak, which is modeled by assuming a d-wave pairing symmetry of the superconducting order parameter.The magnetic field dependence of the conductance spectra has been measured in very stable junctions. In some cases, due to the granularity of the samples, clusters of grains in series introduce peculiar features in the conductance spectra.
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