Skew band structure and anomalous conductivity of PdCrO
arXiv:2006.05453
Abstract
A model of magnetic interaction of CrO and Pd hexagonal layers in PdCrO is proposed. Since Cr-O-Pd bridges do not provide an interlayer magnetic coupling in case of a 120 magnetic ordering, a direct exchange interaction between magnetic chromium ions and conductive palladium layers is assumed. It is shown that this interaction leads to a novel state of itinerant electrons (skew bands). It is characterized by abnormally high conductivity at low temperatures due to strong suppression of umklapp electron-phonon scattering.
4 pages, 3 figures