Light-Induced Metastable State in Charge-Ordered YBa${}_2$Cu${}_3$O${}_{6+x}$

H. Gretarsson, S. M. Souliou, S. Jeong +6

We report temporal changes in Raman-scattering spectra of detwinned YBa${}_2$Cu${}_3$O${}_{6+x}$ single crystals under exposure to red laser light polarized along the crystallographic $a…