Single monolayer ferromagnetic perovskite SrRuO3 with high conductivity and strong ferromagnetism

Authors:
Publisher website
Google Scholar
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 (SRO) 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 the enhancement of the conductivity and ferromagnetic ordering of both the Ru 4d and O 2p orbitals. The resistivity of the single monolayer SRO is comparable to that of the bulk SRO. This study highlights the potential of monolayer SRO as a platform for two-dimensional magnetic oxide systems, offering opportunities for the exploration of spintronic devices and quantum transport phenomena.
Funding Information
  • Spintronics Research Network of Japan

This publication has 61 references indexed in Scilit: