Single monolayer ferromagnetic perovskite SrRuO3 with high conductivity and strong ferromagnetism

Abstract

Achieving robust ferromagnetism and high conductivity in atomically thin oxide materials is critical for advancing spintronic technologies. Here, we report the growth of a highly conductive and ferromagnetic single monolayer SrRuO3 having a high Curie temperature of 154 K on DyScO3 110 substrates. The SrTiO3 capping layer effectively suppresses surface reactions, which typically hinder ferromagnetism in atomically thin films. X ray absorption spectroscopy and X ray magnetic circular dichroism measurements revealed strong orbital hybridization between Ru 4d and O 2p orbitals in the SRO monolayer, which contributes to enhancement of the conductivity and ferromagnetic ordering of both the Ru 4d and O 2p orbitals. The resistivity of the single monolayer SrRuO3 on the better lattice matched DyScO3 substrate is approximately one-third of that of previously reported single monolayer SrRuO3 grown on an SrTiO3 substrate. This study highlights the potential of monolayer SrRuO3 as a platform for two dimensional magnetic oxide systems, offering new opportunities for the eploration of spintronic devices and quantum transport phenomena.

References in corpus (14)

• Magnetic 2D materials and heterostructures
• Van der Waals heterostructures for spintronics and opto-spintronics
• Critical thickness and orbital ordering in ultrathin La0.7Sr0.3MnO3 films
• Quasiparticle Mass Enhancement and Temperature Dependence of the Electronic Structure of Ferromagnetic SrRuO3 Thin Films
• Preventing the reconstruction of the polar discontinuity at oxide heterointerfaces
• Determining the Curie temperature of La0.67Sr0.33MnO3 thin films
• Bayesian optimization with experimental failure for high-throughput materials growth
• Magnetic ground state of the Ising-like antiferromagnet DyScO${}_3$
• Thickness-dependent quantum transport of Weyl fermions in ultra-high-quality SrRuO3 films
• The origin of insulating and non-ferromagnetic SrRuO3 monolayers
• Van der Waals Magnetic Electrode Transfer for Two-Dimensional Spintronic Devices
• The thickness dependence of quantum oscillations in ferromagnetic Weyl metal SrRuO${}_3$
• Isotropic orbital magnetic moments in magnetically anisotropic SrRuO3 films
• Single-layer spin-orbit-torque magnetization switching due to spin Berry curvature generated by minute spontaneous atomic displacement in a Weyl oxide