120 citations · 120 across the 4 of their papers we have counts for
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Two-band Eliashberg equations and the experimental Tc of the diboride Mg1-xAlxB2
G. A. Ummarino, R. S. Gonnelli, S. Massidda +1
The variation of the superconducting critical temperature Tc as a function of x in the diboride Mg1-xAlxB2 has been studied in the framework of the two-bands Eliashberg theory and…
Point-contact study of gap amplitude and symmetry in RuSr_2GdCu_2O_8
G. A. Ummarino, A. Calzolari, D. Daghero +4
We present the results of point-contact spectroscopy measurements in polycrystalline RuSr_2GdCu_2O_8 samples previously characterized from both the structural and the electrical po…
Point-Contact Spectroscopy in MgB_2: from Fundamental Physics to Thin-Film Characterization
R. S. Gonnelli, D. Daghero, A. Calzolari +9
In this paper we highlight the advantages of using point-contact spectroscopy (PCS) in multigap superconductors like MgB_2, both as a fundamental research tool and as a non-destruc…
The Magnetic-field Dependence of the Gaps in a Two-band Superconductor: A Point-contact Study of MgB_2 Single Crystals
R. S. Gonnelli, D. Daghero, A. Calzolari +6
We present the results of directional point-contact measurements in MgB_2 single crystals, in magnetic fields up to 9 T parallel to the c axis. By fitting the conductance curves of…
The determination of the electron-phonon interaction from tunneling data in the two-band superconductor MgB2
D. Daghero, R. S. Gonnelli, G. A. Ummarino +4
We calculate the tunneling density of states (DOS) of MgB2 for different tunneling directions, by directly solving the real-axis, two-band Eliashberg equations (EE). Then we show t…
Directional point-contact spectroscopy of MgB2 single crystals in magnetic fields: two-band superconductivity and critical fields
R. S. Gonnelli, D. Daghero, G. A. Ummarino +6
The results of the first directional point-contact measurements in MgB2 single crystals, in the presence of magnetic fields up to 9 T either parallel or perpendicular to the ab pla…