Evidence for spin swapping in an antiferromagnet

Antiferromagnetic insulators offer strategic advantages in spintronic applications because of their negligible stray fields and ultrafast magnetic dynamics. Control magnetization readout state are essential for these but remain challenging. Here we report the electrical detection room-temperature switching canted antiferromagnetic insulator LaFeO3, capped with a Pt or W overlayer. The observation large magneto-thermovoltage an in-plane temperature gradient suggests that mechanism is swapping spin currents antiferromagnet. This effect provides sensitive probe tiny net insulator, which can be manipulated by field on order 10 mT. Our results highlight new material class insulating antiferromagnets spintronics caloritronics method signals insulator. Electrical antiferromagnet important goal applications. Now, voltage created thermal route achieving this goal.