Lattice vibrations of alpha'-NaV_2O_5 in the low-temperature phase. Magnetic bound states?

M. N. Popova, A. B. Sushkov, S. A. Klimin +4

We report high resolution polarized infrared studies of the quarter-filled spin ladder compound alpha'-NaV_2O_5 as a function of temperature (5K <= T <= 300K). Numerous new modes w…