Spin phonon coupling in frustrated magnet CdCr${}_2$O${}_4$

R. Valdés Aguilar, A. B. Sushkov, Y. J. Choi +2

The infrared phonon spectrum of the spinel CdCr2O4 is measured as a function temperature from 6 K to 300K. The triply degenerate Cr phonons soften in the paramagnetic phase as temp…