Publication
Anomalous Antiferromagnetism in Metallic RuO2 Determined by Resonant X-ray Scattering
Authors
Zhu, Z.; Strempfer, J. ; Rao, R.; Pelliciari, J. ; Choi, Y.; Kawaguchi, T.; You, H.; Mitchell, J.; Shao-Horn, Y.; Comin, R.
Abstract
We studied the magnetic ordering of thin films and bulk crystals of rutile RuO2 using resonant X-ray scattering across the Ru L2 absorption edge. Combining a polarization analysis and azimuthal-angle dependence of the magnetic Bragg signal, we have established the presence of G-type anti-ferromagnetism in RuO2 with TN > 300 K. In addition to revealing a spin-ordered ground state in the simplest ruthenium oxide compound, the persistence of magnetic order even in nanometer-thick films lays the ground for potential applications of RuO2 in antiferromagnetic spintronics.