Intermediate scattering potential strength in electron-irradiated ${\text{YBa}}_2{\text{Cu}}_3{\text{O}}_{7-\delta }$ from London penetration depth measurements

Kyuil Cho, M. Konczykowski, S. Teknowijoyo +4

Temperature-dependent London penetration depth, $\lambda (T)$, of a high quality optimally-doped ${\text{YBa}}_2{\text{Cu}}_3{\text{O}}_{7-\delta }$ single crystal was measured using tunnel-diode…