Pressure-dependent optical investigations of $\alpha$-(BEDT-TTF)${}_2$I${}_3$: tuning charge order and narrow gap towards a Dirac semimetal

R. Beyer, A. Dengl, T. Peterseim +5

Infrared optical investigations of $\alpha$-(BEDT-TTF)${}_2$I${}_3$ have been performed in the spectral range from 80 to 8000~cm${}^{-1}$ down to temperatures as low as 10~K by applying hydro…