Phys.org August 23, 2033
Previous studies have shown spin injection and detection in antiferromagnet/nonmagnetic metal bilayers; however, spin injection in these systems has been found effective only at cryogenic temperatures. An international team of researchers (USA – UC Riverside, University of Utah, Germany) has demonstrated sizable interfacial spin transport in a hybrid antiferromagnet/ferromagnet system, consisting of Cr2O3 and permalloy, which remains robust up to the room temperature. They examined their experimental data within a spin diffusion model and found evidence for the important role of interfacial magnon pumping in the signal generation. The results bridge spin-orbitronic phenomena of ferromagnetic metals with antiferromagnetic spintronics and demonstrate an advancement toward antiferromagnetic spin-torque devices…read more. Open Access TECHNICAL ARTICLE
Cross-sectional transmission electron micrograph of the m-plane Al2O3/Cr2O3 interface with the c-axis [0001]-oriented out of the page…Credit: Phys. Rev. Research 4, 033139, Published 22 August 2022Â