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Point-contact spectroscopy in MgB2 single crystals in magnetic field
D. Daghero, R. S. Gonnelli, G. A. Ummarino +4
We present the results of a spectroscopic study of state-of-the-art MgB2 single crystals, carried out by using a modified point-contact technique. The use of single crystals allowe…
Direct evidence for two-band superconductivity in MgB_2 single crystals from directional point-contact spectroscopy in magnetic fields
R. S. Gonnelli, D. Daghero, G. A. Ummarino +4
We present the results of the first directional point-contact spectroscopy experiments in high-quality MgB_2 single crystals. Due to the directionality of the current injection int…
Possible d+id scenario in La_{2-x}Sr_{x}CuO_4 by point-contact measurements
D. Daghero, R. S. Gonnelli, G. A. Ummarino +1
We analyze the results of point-contact measurements in La_{2-x}Sr_{x}CuO_{4} (LSCO) previously reported as a clear evidence of the separation between gap and pseudogap in this cop…