Abstract
We consider the excitation of large amplitude gyrotropic vortex core precession in a permalloy nanodisk by the torques originating from the in-plane microwave current flowing along the interface of the permalloy/Bi2Se3 heterostructures, in which the huge charge-to-spin conversion ratio is observed [A. Mellnik et al., Nature 511, 449 (2014)NATUAS0028-083610.1038/nature13534]. We consider analytically and by micromagnetic modeling the dependence of this excitation on the frequency and magnitude of the microwave current. The analogies of the vortex dynamics and the Landau phase-transition theory are demonstrated. These findings open the possibility to excite gyrotropic vortex motion with the current densities far lower than by any other means.
| Original language | English |
|---|---|
| Article number | 094432 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 92 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2015 Sep 18 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Large amplitude vortex gyration in permalloy/ Bi2Se3 -like heterostructures. / Skirdkov, P. N.; Zvezdin, K. A.; Belanovsky, A. D.; George, J. M.; Wu, J. C.; Cros, V.; Zvezdin, A. K.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 92, No. 9, 094432, 18.09.2015.Research output: Contribution to journal › Article
TY - JOUR
T1 - Large amplitude vortex gyration in permalloy/ Bi2Se3 -like heterostructures
AU - Skirdkov, P. N.
AU - Zvezdin, K. A.
AU - Belanovsky, A. D.
AU - George, J. M.
AU - Wu, J. C.
AU - Cros, V.
AU - Zvezdin, A. K.
PY - 2015/9/18
Y1 - 2015/9/18
N2 - We consider the excitation of large amplitude gyrotropic vortex core precession in a permalloy nanodisk by the torques originating from the in-plane microwave current flowing along the interface of the permalloy/Bi2Se3 heterostructures, in which the huge charge-to-spin conversion ratio is observed [A. Mellnik et al., Nature 511, 449 (2014)NATUAS0028-083610.1038/nature13534]. We consider analytically and by micromagnetic modeling the dependence of this excitation on the frequency and magnitude of the microwave current. The analogies of the vortex dynamics and the Landau phase-transition theory are demonstrated. These findings open the possibility to excite gyrotropic vortex motion with the current densities far lower than by any other means.
AB - We consider the excitation of large amplitude gyrotropic vortex core precession in a permalloy nanodisk by the torques originating from the in-plane microwave current flowing along the interface of the permalloy/Bi2Se3 heterostructures, in which the huge charge-to-spin conversion ratio is observed [A. Mellnik et al., Nature 511, 449 (2014)NATUAS0028-083610.1038/nature13534]. We consider analytically and by micromagnetic modeling the dependence of this excitation on the frequency and magnitude of the microwave current. The analogies of the vortex dynamics and the Landau phase-transition theory are demonstrated. These findings open the possibility to excite gyrotropic vortex motion with the current densities far lower than by any other means.
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U2 - 10.1103/PhysRevB.92.094432
DO - 10.1103/PhysRevB.92.094432
M3 - Article
AN - SCOPUS:84942447008
VL - 92
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 9
M1 - 094432
ER -