Electron-phonon interaction in transition metal diborides TB_2 (T=Zr, Nb, Ta) studied by point-contact spectroscopy

Abstract

The electron-phonon interaction (EPI) in transition metal diborides TB_2 (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 MgB_2.

V2: minor changes, Ref.[21] added, publ. in PRB

References in corpus (5)

• Electron-phonon interaction in the normal and superconducting states of MgB2
• Phonon dispersion and electron-phonon coupling in MgB_2 and AlB_2
• Phonon Density-of-States in MgB2
• Electron Transport in Diborides: Observation of Superconductivity in ZrB2
• Electronic structure and weak electron-phonon coupling in TaB${}_2$

Cited by in corpus (10)

• Review of Transition-Metal Diboride Thin Films
• Lattice dynamics and electron-phonon coupling in transition metal diborides
• Comparative study of the electronic structure, phonon spectra and electron-phonon interaction of ZrB2 and TiB2
• Advances in point-contact spectroscopy: two-band superconductor MgB2 (A review)
• Search for E_2g phonon modes in MgB_2 single crystals by point-contact spectroscopy
• Theoretical Study of Electron-Phonon Interaction in ZrB2 and TaB2
• Acoustical-Mode-Driven Electron-Phonon Coupling in Transition-Metal Diborides
• Nb-substitution suppresses the superconducting critical temperature of pressurized MoB${}_2$
• Study of the electron-phonon interaction in metal diborides MeB_2 (Me=Zr, Nb, Ta, Mg) by point-contact spectroscopy
• Reconstruction of the electron-phonon interaction function in Ta, 2H-NbSe2 and MgB2 from spectra of S - c - N point-contacts