English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We review investigations of the electron-phonon interaction (EPI) in metaldiborides MeB_2 (Me=Zr, Nb, Ta, Mg) by point-contact (PC) spectroscopy. Fortransition metal compounds the PC EPI functions were recovered and EPIparameter $\lambda\lesssim 0.1$ were estimated. The data are consistent withthe measured surface phonon dispersion curves. The low $\lambda$ valuequestions some reports about superconductivity in these compounds. Contrary,EPI in superconducting MgB_2 films manifests also in the PC spectra itself byvirtue of an elastic EPI contribution to the excess current determined by theenergy dependence of the superconducting order parameter. To analyse the phononfeatures in the PC spectra of MgB$_2$ a two-band model is exploited and theproximity effect in the {\bf k}-space is suggested.Comment: 6 pages, 6 figs., prepared for proceedings of conference "Modern  Problem in Superconductivity", Sept. 2002, Yalta, Ukrain

modern physics letters b

Study of the Electron-Phonon Interaction in Metal Diborides MeB2 (Me = Zr, Nb, Ta, Mg) by Point-Contact Spectroscopy