Fig. 4: Electron–phonon interaction vs Fermi surface nesting.
From: van der Waals driven anharmonic melting of the 3D charge density wave in VSe2
a Calculated harmonic phonon spectra of 1T-VSe2 along (h 0 -1/3) r.l.u. Only acoustic modes are shown. The gray line denotes the mode silent in IXS, which is labeled as ω3 here. b Phonon linewidth (full width at half maximum) given by the electron–phonon interaction for the same modes. c Real part of the non-interacting susceptibility, χ0, as well as the nesting function, ζ, at the same wave vectors. d Ratio between the full width at half maximum given by the electron–phonon interaction and the nesting function.
