title: Evolution of the local superconducting density of states in ErRh4B4 close to the ferromagnetic transition.
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.
authors: Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
authors: V
authors: V
authors: Crespo
authors: J G
authors: JG
authors: Rodrigo
authors: H
authors: H
authors: Suderow
authors: S
authors: S
authors: Vieira
authors: D G
authors: DG
authors: Hinks
authors: I K
authors: IK
authors: Schuller