Reconstruction of the electron-phonon interaction function in Ta, 2H-NbSe2 and MgB2 from spectra of S - c - N point-contacts

TL;DR

This paper demonstrates a method to qualitatively reconstruct the electron-phonon interaction function from point-contact spectra in superconductors like Ta, 2H-NbSe2, and MgB2, highlighting its limitations and comparing results with existing literature.

Contribution

It introduces a technique for reconstructing the electron-phonon interaction function from superconducting point-contact spectra and discusses its applicability and constraints.

Findings

Successful qualitative reconstruction of the electron-phonon interaction function.

Identification of the method's limits and restrictions.

Comparison of reconstructed data with literature results.

Abstract

Using Ta, 2H-NbSe2 and MgB2 as an example it is shown that it is possible to reconstruct qualitatively a function of the electron-phonon interaction from point-contact spectra in a superconducting state. The limits and the restrictions of this method are also shown. The results obtained are compared with available literature data.