Magnetosensitivity in Dipolarly Coupled Three-Spin Systems

Conditions for the spin wave nonreciprocity in an array of dipolarly coupled magnetic nanopillars

It is demonstrated that collective spin waves (SWs) propagating in complex periodic arrays of dipolarly coupled magnetic nanopillars existing in a saturated (single-domain) ground state in a zero bias magnetic field could be nonreciprocal. To guarantee the SW nonreciprocity two conditions should be fulfilled:(i) existence of a nonzero out-of-plane component of the pillars’ static magnetization ...

Asymmetric magnetization reversal in dipolarly coupled spin valve structures with perpendicular magnetic anisotropy

Phase locking dynamics of dipolarly coupled vortex-based spin transfer oscillators

A. D. Belanovsky,1 N. Locatelli,2 P. N. Skirdkov,1 F. Abreu Araujo,3 J. Grollier,2 K. A. Zvezdin,1,4 V. Cros,2 and A. K. Zvezdin1 1A. M. Prokhorov General Physics Institute, RAS, Vavilova, 38, 119991 Moscow, Russia 2Unité Mixte de Physique CNRS/Thales, 1 avenue A. Fresnel, 91767 Palaiseau, France and Université Paris–Sud, 91405 Orsay, France 3Université Catholique de Louvain, 1 place de l’Unive...

Efficient Synchronization of Dipolarly Coupled Vortex-Based Spin Transfer Nano-Oscillators

Due to their nonlinear properties, spin transfer nano-oscillators can easily adapt their frequency to external stimuli. This makes them interesting model systems to study the effects of synchronization and brings some opportunities to improve their microwave characteristics in view of their applications in information and communication technologies and/or to design innovative computing architec...

Coupled spin-boson systems far from equilibrium.

Nonequilibrium quantum dynamics of a system comprising a ~pseudo! spin1 2 object coupled to a boson degree of freedom is studied. It is shown that the time evolution of the system is described by a set of elementary scattering processes. Through these processes the system approaches an equilibrium in which the spin is in a mixed state that on average maximizes its entropy. However, the irregula...