Oral: Charge density wave suppression by Ba doping in quasi-1D Eu_1-xBa_xAl₄ measured with x-ray diffraction

EuAl₄ is a charge density wave (CDW) material with a high transition temperature (T_c). It exhibits a CDW along the crystallographic $c$ direction, similar to SrAl₄. Doping EuAl₄ with Ba suppresses the CDW, providing insight into the formation and evolution of CDWs as the electronic structure is modified by addition of mobile carriers. We conducted a systematic study of Ba-doped EuAl₄ compounds using X-ray diffraction (XRD) and observed a suppression of T_c up to 40% Ba concentration. This suppression is accompanied by a monotonic increase in the CDW wave vector. I will discuss the relationship between these observations and the phase diagram determined from transport experiments.