Kavli Affiliate: Daniel C. Ralph
| First 5 Authors: Thow Min Jerald Cham, Daniel G. Chica, Xiaoxi Huang, Kenji Watanabe, Takashi Taniguchi
| Summary:
Antiferromagnetic spintronics offers the potential for higher-frequency
operations and improved insensitivity to magnetic fields compared to
ferromagnetic spintronics. However, previous electrical techniques to detect
antiferromagnetic dynamics have utilized large, millimeter-scale bulk crystals.
Here we demonstrate direct electrical detection of antiferromagnetic resonance
in structures on the few-micrometer scale using spin-filter tunneling in
PtTe$_2$/bilayer CrSBr/graphite junctions in which the tunnel barrier is the
van der Waals antiferromagnet CrSBr. This sample geometry allows not only
efficient detection, but also electrical control of the antiferromagnetic
resonance through spin-orbit torque from the PtTe$_2$ electrode. The ability to
efficiently detect and control antiferromagnetic resonance enables detailed
studies of the physics governing these high frequency dynamics.
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