Electron-phonon interaction function in the layered dichalcogenide 2Ha-TaSe2.

Autor: Kamarchuk, G. V., Khotkevich, A. V., Savitskiĭ, A. V., Molinié, P., Leblanc, A., Falques, E.
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Zdroj: Low Temperature Physics; Jul2009, Vol. 35 Issue 7, p539-543, 5p, 3 Graphs
Abstrakt: Point-contact spectroscopy is used to investigate experimentally the electron-phonon interaction spectrum in the layered quasi-two-dimensional dichalcogenide 2Ha-TaSe2. The measurements are performed on 2Ha-TaSe2/Cu heterocontacts. The point-contact spectra reflecting the effects of the electron-phonon interaction are recorded in the spectral regime of current flow and delocalization of the electronic states near point contacts for small momentum free-path lengths of electrons. The electron-phonon interaction function in this compound is determined for the first time. Calculations of important integral parameters of the electron-phonon system of the experimental material confirm the good reproducibility of the results. [ABSTRACT FROM AUTHOR]
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