Mixed-Valence Square Planar Complexes: A New Class of Solids with High Electrical Conductivity in One Dimension

Abstract

Square planar complexes of platinum are shown to have high, possibly metallic conductivity along one axis due to overlap between ${d}_{{z}^{2}}$ orbitals of platinum in two valence states. The room-temperature Seebeck effect is small and positive which is interpreted as caused by a degenerate gas of holes.