Mechanism of enhanced optical second-harmonic generation in the conducting pyrochlore-type Pb${}_2$Ir${}_2$O${}_{7-x}$ oxide compound

Yasuyuki Hirata, Makoto Nakajima, Yusuke Nomura +8

The structural, electronic, and optical properties of pyrochlore-type Pb${}_2$Ir${}_2$O${}_6$O'${}_{0.55}$, which is a metal without spatial inversion symmetry at room temperature, w…