6533b832fe1ef96bd129a2a8
RESEARCH PRODUCT
Chiral excitations of magnetic droplet solitons driven by their own inertia
Philipp PirroMorteza MohseniMajid MohseniDavi R. RodriguesQi WangSunjae ChungSeyed Amir Hossein BanuaziziM. SaghafiH. F. YazdiMartina AhlbergJohan ÅKermanJohan ÅKermansubject
PhysicsInertial frame of referenceCondensed matter physicsCondensed Matter - Mesoscale and Nanoscale PhysicsOerstedmedia_common.quotation_subjectFOS: Physical sciencesInertiaPhysics::Fluid DynamicsNonlinear systemEffective mass (solid-state physics)Mesoscale and Nanoscale Physics (cond-mat.mes-hall)TorqueExcitationmedia_commondescription
The inertial effects of magnetic solitons play a crucial role in their dynamics and stability. Yet governing their inertial effects is a challenge for their use in real devices. Here, we show how to control the inertial effects of magnetic droplet solitons. Magnetic droplets are strongly nonlinear and localized autosolitons than can form in current-driven nanocontacts. Droplets can be considered as dynamical particles with an effective mass. We show that the dynamical droplet bears a second excitation under its own inertia. These excitations comprise a chiral profile, and appear when the droplet resists the force induced by the Oersted field of the current injected into the nanocontact. We reveal the role of the spin torque on the excitation of these chiral modes and we show how to control these modes using the current and the field.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-05-03 |