Electron-phonon and spin-phonon coupling in NaV${}_2$O${}_5$: charge fluctuations effect

E. Ya. Sherman, M. Fischer, P. Lemmens +2

We show that the asymmetric crystal environment of the V site in the ladder compound NaV${}_2$O${}_5$ leads to a strong coupling of vanadium 3d electrons to phonons. This coupling…