Published in
American Physical Society, Physical review B, 14(89)
DOI: 10.1103/physrevb.89.140402
Links
- ORCID
- ORCID
- American Physical Society
- [repository.ubn.ru.nl]
- [hdl.handle.net]
- [repository.ubn.ru.nl] | PDF
- [www.researchgate.net] | PDF
Tools
Bias-controlled ultrafast demagnetization in magnetic tunnel junctions
,
C. Piovera,
C. Rinaldi,
E. Albisetti,
D. Petti ,
A. R. Khorsand,
L. Duo,
C. Dallera,
M. Cantoni,
R. Bertacco,
M. Finazzi,
E. Carpene,
A. V. Kimel,
A. Kiriliouk,
A. Kirilyuk
and other authors.
Full text: Download
Abstract
We report on the possibility of controlling the maximum demagnetization induced by a femtosecond laser pulse in a CoFeB-based magnetic tunnel junction, by tuning the external bias applied to the junction. We explain this effect in terms of laser-induced spin-polarized currents which can be controlled by tuning the conductivity of the junction. This demonstrates the contribution of spin-polarized currents for laser-induced demagnetization and may pave the way to increase the speed of spintronic devices, using ultrashort laser pulses.