Boosting superconductivity in ultrathin YBa${}_2$Cu${}_3$O${}_{7-\delta }$ films via nanofaceted substrates

Eric Wahlberg, Riccardo Arpaia, Debmalya Chakraborty +7

In cuprate high-temperature superconductors the doping level is fixed during synthesis, hence the charge carrier density per CuO${}_2$ plane cannot be easily tuned by conventional ga…