A-Site Columnar-Ordered Perovskite CaZnVO as a Pauli-Paramagnetic Metal.

In this study, we successfully synthesized a novel A-site columnar-ordered perovskite CaZnVO. This compound features a square-planar-coordinated Zn disorder, which is the same characteristic as the centrosymmetric paraelectric CaMnTiO. Unlike CaMnTiO, which shows a centrosymmetric paraelectric-noncentrosymmetric ferroelectric transition, CaZnVO retains Pauli-paramagnetic metallicity arising from itinerant V d electrons and centrosymmetry down to 5 K. Based on analogous compounds, we expect CaZnVO to provide a new playground for the electronic and magnetic states of V.