Imaging the Anisotropic Nonlinear Meissner Effect in Nodal YBa${}_2$Cu${}_3$O${}_{7-\delta }$ Thin-Film Superconductors

Alexander P. Zhuravel, B. G. Ghamsari, C. Kurter +6

We have directly imaged the anisotropic nonlinear Meissner effect in an unconventional superconductor through the nonlinear electrodynamic response of both (bulk) gap nodes and (su…