Investigation of the electron–phonon interaction in the intermetallic compound Cd3Mg by point contact spectroscopy

The electron–phonon interaction (EPI) function in the ordered intermetallic compound Cd3Mg has been determined experimentally by point contact spectroscopy. It was possible to prepare pure point contacts with an effective diameter much smaller than the electron mean free path and thereby to obtain quantitative information about the EPI. The experimental value of the integral parameter of the EPI is close to estimates based on electronic heat capacity data and the electronic density of states in Cd3Mg.

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