Point-contact spectroscopy of two-band superconductor MgB2
Yanson, I. K. · Naidyuk, Yu. G.
Original · EN
The progress in investigation of two-band superconductor MgB₂ by the point-contact spectroscopy (PCS) is given. Results of study of superconducting gap temperature and magnetic field dependence for two-dimensional σ and three-dimensional π band and electron-phonon-interaction spectral function are presented. Correlation between the gap value and the intensity of the high Tc driving force -- E₂g boron vibration mode, is provided. PCS data on some nonsuperconducting transition metal diborides are surveyed for comparison.
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