AI Article Synopsis
- The study investigates local tunneling spectroscopy in the unique reentrant superconductor ErRh4B4, focusing on its superconducting and ferromagnetic phases.
- Tunneling conductance curves transition from normal to superconducting characteristics near the ferromagnetic transition temperature, exhibiting notable hysteresis.
- The findings reveal no superconducting correlations in the ferromagnetic phase, while a distinct V-shaped density of states is observed in the superconducting phase, indicating a coexistence of magnetically modulated phases before ferromagnetism occurs.
Article Abstract
We present local tunneling spectroscopy experiments in the superconducting and ferromagnetic phases of the reentrant superconductor ErRh4B4. The tunneling conductance curves jump from showing normal to superconducting features within a few mK close to the ferromagnetic transition temperature, with a clear hysteretic behavior. Within the ferromagnetic phase, we do not detect any superconducting correlations. Within the superconducting phase we find a peculiar V-shaped density of states at low energies, which is produced by the magnetically modulated phase that coexists with superconductivity just before ferromagnetism sets in.
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| http://dx.doi.org/10.1103/PhysRevLett.102.237002 | DOI Listing |
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