Tuning crystal-fields by He-irradiation and orbital Widom line in SrVO${}_3$ films

Matthias Pickem, Karsten Held, Jan M. Tomczak

Helium-ion irradiation of epitaxial SrVO${}_3$/SrTiO${}_3$ films causes a metal-insulator transition, so far attributed to a Mott localization driven by a reduced kinetic energy. Using…