Journal
APPLIED PHYSICS LETTERS
Volume 98, Issue 6, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3553771
Keywords
-
Categories
Funding
- CNRS
- ANR agency [VOICE PNANO-09-P231-36]
- EU [NMP-FP7-212257]
Ask authors/readers for more resources
We investigate the dynamics of two coupled vortices driven by spin transfer. We are able to independently control with current and perpendicular field and to detect the respective chiralities and polarities of the two vortices. For current densities above J=5.7x10(7) A/cm(2), a highly coherent signal (linewidth down to 46 kHz) can be observed, with a strong dependence on the relative polarities of the vortices. It demonstrates the interest of using coupled dynamics in order to increase the coherence of the microwave signal. Emissions exhibit a linear frequency evolution with perpendicular field, with coherence conserved even at zero magnetic field. (C) 2011 American Institute of Physics. [doi:10.1063/1.3553771]
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available