Electron-phonon interaction in transition metal diborides TB2 (T=Zr, Nb, Ta) studied by point-contact spectroscopy
Yu. G. Naidyuk, O. E. Kvitnitskaya, I. K. Yanson, S. -L. Drechsler, G. Behr, S. Otani
Abstract
The electron-phonon interaction (EPI) in transition metal diborides TB2 (T=Zr, Nb, Ta) is investigated by point-contact (PC) spectroscopy. The PC EPI functions were recovered and the EPI parameters lambda<0.1 were estimated for all three compounds. Common and distinctive features between the EPI functions for those diborides are discussed also in connection with the superconductivity in MgB2.
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