Mechanism of intermetallic charge transfer and bond disproportionation in BiNiO${}_3$ and PbNiO${}_3$ revealed by hard x-ray photoemission spectroscopy

Tatsuya Yamaguchi, Mizuki Furo, Yuki Sakai +11

Perovskites with Bi or Pb on the A-site host a number of interesting and yet to be understood phenomena such as negative thermal expansion in BiNiO${}_3$. We employ hard x-ray photoe…