A Frequency-Controlled Magnetic Vortex Memory
arXiv:1003.0158 · doi:10.1063/1.3373833
Abstract
Using the ultra low damping NiMnSb half-Heusler alloy patterned into vortex-state magnetic nano-dots, we demonstrate a new concept of non-volatile memory controlled by the frequency. A perpendicular bias magnetic field is used to split the frequency of the vortex core gyrotropic rotation into two distinct frequencies, depending on the sign of the vortex core polarity inside the dot. A magnetic resonance force microscope and microwave pulses applied at one of these two resonant frequencies allow for local and deterministic addressing of binary information (core polarity).
References in corpus (8)
- Electrical switching of vortex core in a magnetic disk
- Dynamic Origin of Vortex Core Switching in Soft Magnetic Nanodots
- Quasi ballistic magnetization reversal
- Polarisation selective magnetic vortex dynamics and core reversal in rotating magnetic fields
- X-ray imaging of the dynamic magnetic vortex core deformation
- Bistability of vortex core dynamics in a single perpendicularly magnetized nano-disk
- Low-frequency vortex dynamic susceptibility and relaxation in mesoscopic ferromagnetic dots
- Ferromagnetic resonance force spectroscopy of individual sub-micron size samples
Cited by in corpus (34)
- Magnetic Vortex Core Reversal by Excitation of Spin Waves
- Stray-field imaging of magnetic vortices with a single diamond spin
- Magnetization Dynamics of Nanoscale Magnetic Materials: A Perspective
- Experimental Observation of Vortex Rings in a Bulk Magnet
- Spin torque resonant vortex core expulsion for an efficient radio-frequency detection scheme
- Identification and selection rules of the spin-wave eigen-modes in a normally magnetized nano-pillar
- Direct evidence for minority spin gap in the Co2MnSi Heusler alloy
- Spin-Wave Spectrum in Magnetic Nanodot with Continuous Transition between Vortex, Bloch-type Skyrmion and Néel-type Skyrmion States
- Optimal control of vortex core polarity by resonant microwave pulses
- Geometry induced phase transitions in magnetic spherical shell
- Probing the anharmonicity of the potential well for magnetic vortex core in nanodot
- Curvature induced chirality symmetry breaking in vortex core switching phenomena
- Quantitative stray field imaging of a magnetic vortex core
- Strong coupling of a single photon to a magnetic vortex
- Broadband probing magnetization dynamics of the coupled vortex state permalloy layers in nanopillars
- Curvature effects in vortex chirality switching
- Interaction between magnetic vortex cores in a pair of nonidentical nanodisks
- Equilibrium states of soft magnetic hemispherical shell
- Effect of Dzyaloshinskii-Moriya interaction on magnetic vortex switching driven by radial spin waves
- Resonant pinning spectroscopy with spin-vortex pairs
- Electrical measurement of magnetic-field-impeded polarity switching of a ferromagnetic vortex core
- Exchange-mediated, non-linear, out-of-plane magnetic field dependence of the ferromagnetic vortex gyrotropic mode frequency driven by core deformation
- Large amplitude vortex gyration in Permalloy/BiSe-like heterostructures
- Transient dynamics of strongly coupled spin vortex pairs: effects of anharmonicity and resonant excitation on inertial switching
- Chiral Spin Bobbers in Exchange-Coupled Hard-Soft Magnetic Bilayers
- Vortex Polarity Switching in Magnets with Surface Anisotropy
- Magnetization reversal using excitation of collective modes in nanodot matrices
- Unusual spin-wave dynamics in core-shell magnetic nanodisks
- Chirality-mediated bistability and strong frequency downshifting of the gyrotropic resonance of a dynamically de-stiffened magnetic vortex
- Surface anisotropy in a magnetic cylinder induced by the displacement of a vortex core
- Tunable Ultrafast Dynamics of Antiferromagnetic Vortices in Nanoscale Dots
- Unusual magnetic hysteresis and transition between vortex to double pole states arising from interlayer coupling in diamond shaped nanostructures
- Effects of asymmetry in strongly coupled spin vortex pairs
- Field Theory of Linear Spin-Waves in Finite Textured Ferromagnets