Precise probing spin wave mode frequencies in the vortex state of circular magnetic dots
نویسندگان
چکیده
magnetic dots A. A. Awad, K. Y. Guslienko, J. F. Sierra, G. N. Kakazei, V. Metlushko, and F. G. Aliev Dpto. Física de la Materia Condensada, CIII, Universidad Autónoma de Madrid, 28049 Madrid, Spain Dpto. Fisica de Materiales, Universidad del Pais Vasco, 20018 Donostia-San Sebastian, Spain IKERBASQUE, The Basque Foundation for Science, 48011 Bilbao, Spain Departamento de Fisica da Faculdade de Ciencias, IFIMUP and IN–Institute of Nanoscience and Nanoterchnology, Universidade do Porto, 4169-007 Porto, Portugal Departament of Electrical and Computer Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, USA
منابع مشابه
Spin Wave Excitations and Winter’s Magnons in Vertically Coupled Vortex State Permalloy Dots
Circular soft magnetic dots are the main elements of many proposed novel spintronics devices, capable of fascinating spin-based electronics applications, from extremely sensitive magnetic field sensors, to current-tunable microwave vortex oscillators. Here, we investigate static and broadband dynamic magnetization responses of vertically coupled Permalloy (Py) magnetic dots in the vortex state ...
متن کاملHigher order vortex gyrotropic modes in circular ferromagnetic nanodots
Magnetic vortex that consists of an in-plane curling magnetization configuration and a needle-like core region with out-of-plane magnetization is known to be the ground state of geometrically confined submicron soft magnetic elements. Here magnetodynamics of relatively thick (50-100 nm) circular Ni80Fe20 dots were probed by broadband ferromagnetic resonance in the absence of external magnetic f...
متن کاملBroadband probing magnetization dynamics of the coupled vortex state permalloy layers in nanopillars
Related Articles Magnetic hysteresis of an artificial square ice studied by in-plane Bragg x-ray resonant magnetic scattering AIP Advances 2, 022163 (2012) Correlation between electronic structure and magnetic properties of Fe-doped ZnO films J. Appl. Phys. 111, 123715 (2012) The impact of quantum dots magnetization on spin separation and spin current in a multiple quantum-dot ring in the prese...
متن کاملMagnetization reversal in asymmetric trilayer dots: effect of the interlayer magnetostatic coupling
The spin structure and magnetization reversal in Co/insulator/Fe trilayer nanodots are investigated by micromagnetic simulations. The vortex and C-state are found and the magnetization reversal is dominated by the shape asymmetry of the dots, which is produced by cutting off a fraction of the circular dot. The vortex chirality is thus controlled by the magnetic field direction. On the other han...
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 کامل