Crystals of the layered two-dimensional transition-metal dichalcogenide 1T-VSe 2 are investigated by pointcontact spectroscopy in the charge-density wave state. Relevant characteristics such as mean, root-meansquare, and Debye phonon frequencies are obtained. The Debye temperature is ⌰ D ϭ220Ϯ5 K, close to that of 2H-NbSe 2 . The point-contact function g pc () of the electron-phonon interaction reveals a moderate coupling constant pc ϭ0.27. Consequently, the Coulomb potential, the density of states at the Fermi level, and the deformation potential are estimated to be of order 0.22 eV, 2.5 states/eV, and 0.22 eV/Å , respectively.
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