2019/05/28 by Xiaoran Liu, B. J. Kirby, Sobhit Singh +13
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Brillouin zone #Condensed matter physics #Ferromagnetism #Frustration #Ground state #Magnetic and transport properties of perovskites and related materials #Magnetic circular dichroism #Magnetic field #Magnetization #Materials science #Multiferroics and related materials #Optics #Physics #Spinel #Spins #Synchrotron #Synchrotron radiation #cond-mat.str-el
paper · pdf · doi:10.1021/acs.nanolett.9b02159
arxiv created 2019/05/28 · openalex publication_date 2019/10/30 · arxiv updated 2020/01/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
spacer layers in a quantum confined geometry. At the two-dimensional crossover, polarized neutron reflectometry reveals an anomalous enhancement of the total magnetization compared to the bulk value. Synchrotron X-ray magnetic circular dichroism measurements demonstrate the appearance of a long-range ferromagnetic ordering of spins on both Co and Cr sublattices. Brillouin function analyses and ab-initio density functional theory calculations further corroborate that the observed phenomena are due to the strongly altered magnetic frustration invoked by quantum confinement effects, manifested by the onset of a Yafet-Kittel-type ordering as the magnetic ground state in the ultrathin limit, which is unattainable in the bulk.