In-plane anomalous Hall effect and unconventional spin-to-charge conversion in Co/PtCoOx heterostructures
Abstract
We demonstrate in-plane anomalous Hall effect (iAHE) and unconventional spin-to-charge conversion in in-plane Co/PtCoOx heterostructures grown by magnetron sputtering. The temperature-dependent measurements show a strong iAHE signal persisting up to 400 K. In the conventional AHE, transverse voltage is observed when a magnetic field is swept along the out-of-plane direction, whereas in our case, transverse voltage is obtained when a field is swept along the in-plane direction transverse to the current flow. The out-of-plane magnetization measurements show non-negligible out-of-plane magnetization, which causes the iAHE in our Co/PtCoOx stack structure. This out-of-plane remnant magnetization is attributed to the coupling between CoO moments and in-plane Co moments. Our findings expand the understanding of iAHE in ferromagnet/spin–orbit coupled heterostructures. Both the conventional and unconventional spin-to-charge conversions have also been observed at room temperature. The unconventional spin-to-charge conversion figure of merit is three times larger than the conventional spin-to-charge conversion.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (19)
Mahendra DC
Intel Foundry Technology Research , 2501 NE Century Blvd., Hillsboro, Oregon 97124,
Kaan Oguz
Intel Foundry Technology Research , 2501 NE Century Blvd., Hillsboro, Oregon 97124,
Punyashloka Debashis
Intel Foundry Technology Research , 2501 NE Century Blvd., Hillsboro, Oregon 97124,
Adedapo A. Oni
Intel Foundry Technology Research , 2501 NE Century Blvd., Hillsboro, Oregon 97124,
Christopher Gay
Intel Foundry Technology Research , 2501 NE Century Blvd., Hillsboro, Oregon 97124,
Jennifer Lux
Intel Foundry Technology Research , 2501 NE Century Blvd., Hillsboro, Oregon 97124,
Carly Rogan
Intel Foundry Technology Research , 2501 NE Century Blvd., Hillsboro, Oregon 97124,
Tyrone Wilson
Intel Foundry Technology Research , 2501 NE Century Blvd., Hillsboro, Oregon 97124,
Raphael Toku
Intel Foundry Technology Research , 2501 NE Century Blvd., Hillsboro, Oregon 97124,
Dominique Adams
Intel Foundry Technology Research , 2501 NE Century Blvd., Hillsboro, Oregon 97124,
John J. Plombon
Intel Foundry Technology Research , 2501 NE Century Blvd., Hillsboro, Oregon 97124,
Joshua Kevek
Intel Foundry Technology Research , 2501 NE Century Blvd., Hillsboro, Oregon 97124,
Karam Cho
Intel Foundry Technology Research , 2501 NE Century Blvd., Hillsboro, Oregon 97124,
Hai Li
Center for Membrane Biology, Department of Biochemistry and Molecular Biology, The University of Texas Health Science Center at Houston McGovern Medical School
Suehyun Park
Tristan A. Tronic
Intel Foundry Technology Research , 2501 NE Century Blvd., Hillsboro, Oregon 97124,
Scott B. Clendenning
Intel Foundry Technology Research , 2501 NE Century Blvd., Hillsboro, Oregon 97124,
Ian A. Young
Intel Foundry Technology Research , 2501 NE Century Blvd., Hillsboro, Oregon 97124,
Marko Radosavljevic
Intel Foundry Technology Research , 2501 NE Century Blvd., Hillsboro, Oregon 97124,