Spin Vortex Resonance in Non-planar Ferromagnetic Dots
نویسندگان
چکیده
منابع مشابه
Spin Vortex Resonance in Non-planar Ferromagnetic Dots
In planar structures, the vortex resonance frequency changes little as a function of an in-plane magnetic field as long as the vortex state persists. Altering the topography of the element leads to a vastly different dynamic response that arises due to the local vortex core confinement effect. In this work, we studied the magnetic excitations in non-planar ferromagnetic dots using a broadband m...
متن کاملSpin-torque ferromagnetic resonance induced by the spin Hall effect.
We demonstrate that the spin Hall effect in a thin film with strong spin-orbit scattering can excite magnetic precession in an adjacent ferromagnetic film. The flow of alternating current through a Pt/NiFe bilayer generates an oscillating transverse spin current in the Pt, and the resultant transfer of spin angular momentum to the NiFe induces ferromagnetic resonance dynamics. The Oersted field...
متن کاملVortex Dynamics in Non–Abelian Spin Models
We discuss the abelian vortex dynamics in the abelian projection approach to non-abelian spin models. We show numerically that in the three-dimensional SU(2) spin model in the Maximal Abelian projection the abelian off-diagonal vortices are not responsible for the phase transition contrary to the diagonal vortices. A generalization of the abelian projection approach to SU(N) spin models is brie...
متن کاملPeriodic Behavior and Vortex Patterns in Non-circular Quantum Dots
We use the spin-density-functional theory to study the effects of an external magnetic field on two-dimensional quantum dots with a non-circular hard-wall confining potential [1]. The increasing magnetic field leads to spin-polarization and formation of a highly inhomogeneous maximum-density droplet (MDD). The onset of the MDD can be predicted from the number of flux quanta which only depends o...
متن کاملSpin-transfer-driven ferromagnetic resonance of individual nanomagnets.
We demonstrate a technique that enables ferromagnetic resonance measurements of the normal modes for magnetic excitations in individual nanoscale ferromagnets, smaller in volume by more than a factor of 50 compared to individual ferromagnetic samples measured by other resonance techniques. Studies of the resonance frequencies, amplitudes, linewidths, and line shapes as a function of microwave p...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Scientific Reports
سال: 2016
ISSN: 2045-2322
DOI: 10.1038/srep25196