Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 100402-1 - 100402-5 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 94 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 8 Sep 2016 |
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Electrical measurement of magnetic-field-impeded polarity switching of a ferromagnetic vortex core. / Sushruth, Manu; Fried, Jaspar; Anane, A.; Xavier, S.; Deranlot, C.; Kostylev, Mikhail; Cros, V.; Metaxas, Peter.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 94, No. 10, 08.09.2016, p. 100402-1 - 100402-5.Research output: Contribution to journal › Article
TY - JOUR
T1 - Electrical measurement of magnetic-field-impeded polarity switching of a ferromagnetic vortex core
AU - Sushruth, Manu
AU - Fried, Jaspar
AU - Anane, A.
AU - Xavier, S.
AU - Deranlot, C.
AU - Kostylev, Mikhail
AU - Cros, V.
AU - Metaxas, Peter
PY - 2016/9/8
Y1 - 2016/9/8
N2 - © 2016 American Physical Society. Vortex core polarity switching in NiFe disks has been evidenced using an all-electrical magnetoresistive rectification scheme. Simulation and experiments yield a consistent rectified signal loss when driving core gyration at high powers. With increasing power, the frequency range over which the loss occurs grows and the resonance downshifts in frequency, consistent with nonlinear core dynamics and periodic core polarity switching induced by the core reaching its critical velocity. Core-polarity-dependent rectification signals enable an independent verification of the switched core polarity. We also demonstrate the ability to impede core polarity switching by displacing the core towards the disk's edge where an increased core stiffness reduces the core velocity.
AB - © 2016 American Physical Society. Vortex core polarity switching in NiFe disks has been evidenced using an all-electrical magnetoresistive rectification scheme. Simulation and experiments yield a consistent rectified signal loss when driving core gyration at high powers. With increasing power, the frequency range over which the loss occurs grows and the resonance downshifts in frequency, consistent with nonlinear core dynamics and periodic core polarity switching induced by the core reaching its critical velocity. Core-polarity-dependent rectification signals enable an independent verification of the switched core polarity. We also demonstrate the ability to impede core polarity switching by displacing the core towards the disk's edge where an increased core stiffness reduces the core velocity.
U2 - 10.1103/PhysRevB.94.100402
DO - 10.1103/PhysRevB.94.100402
M3 - Article
VL - 94
SP - 100402-1 - 100402-5
JO - Physical Review B
JF - Physical Review B
SN - 1098-0121
IS - 10
ER -