Two superconducting gaps in LaFeAsO0.92F0.08 revealed by 75As nuclear quadrupole resonance

S. Kawasaki, K. Shimada, G. F. Chen +3

We report ${}^{75}$As nuclear quadrupole resonance (NQR) studies on superconducting oxypnictide LaFeAsO${}_{0.92}$F${}_{0.08}$ ($T_{\mathrm{c}}$ = 23 K). The temperature dependence of the spi…