Bibliographic Details
| Title: |
Large voltage-induced modification of spin-orbit torques in Pt/Co/GdOx |
| Authors: |
Emori, Satoru, Bauer, Uwe, Woo, Seonghoon, Beach, Geoffrey S. D. |
| Source: |
Appl. Phys. Lett. 105, 222401 (2014) |
| Publication Year: |
2014 |
| Collection: |
Condensed Matter |
| Subject Terms: |
Condensed Matter - Materials Science |
| More Details: |
We report on large modifications of current-induced spin-orbit torques in a gated Pt/Co/Gd-oxide microstrip due to voltage-driven O$^{2-}$ migration. The Slonczewski-like and field-like torques are quantified using a low-frequency harmonic technique based on the polar magneto-optical Kerr effect. Voltage-induced oxidation of Co enhances the Slonczewski-like torque by as much as an order of magnitude, and simultaneously reduces the anisotropy energy barrier by a factor of ~5. Such magneto-ionic tuning of interfacial spin-orbit effects may significantly enhance the efficiency of magnetization switching and provide additional degrees of freedom in spintronic devices. |
| Document Type: |
Working Paper |
| DOI: |
10.1063/1.4903041 |
| Access URL: |
http://arxiv.org/abs/1411.6153 |
| Accession Number: |
edsarx.1411.6153 |
| Database: |
arXiv |
