Ensemble-averaged Rabi oscillations in a ferromagnetic CoFeB film

@article{Capua2017EnsembleaveragedRO,
  title={Ensemble-averaged Rabi oscillations in a ferromagnetic CoFeB film},
  author={Amir Capua and Charles T. Rettner and See-Hun Yang and Timothy Phung and Stuart S. P. Parkin},
  journal={Nature Communications},
  year={2017},
  volume={8}
}
Rabi oscillations describe the process whereby electromagnetic radiation interacts coherently with spin states in a non-equilibrium interaction. To date, Rabi oscillations have not been studied in one of the most common spin ensembles in nature: spins in ferromagnets. Here, using a combination of femtosecond laser pulses and microwave excitations, we report the classical analogue of Rabi oscillations in ensemble-averaged spins of a ferromagnet. The microwave stimuli are shown to extend the… 
Coherent control in ferromagnets driven by microwave radiation and spin polarized current
Coherent control is a method used to manipulate the state of matter using oscillatory electromagnetic radiation which interacts with the state in a nonequilibrium manner before the steady
Microwave and spin transfer torque driven coherent control in ferromagnets
Coherent control is a method used to manipulate the state of matter using oscillatory electromagnetic radiation which relies on the non-adiabatic interaction. It is commonly applied in quantum
Laser-induced torques in spin spirals
We investigate laser-induced torques in magnetically noncollinear ferromagnets with a spin-spiral magnetic structure using ab initio calculations. Since spin spirals may be used to approximate the
Nutation Spectroscopy of a Nanomagnet Driven into Deeply Nonlinear Ferromagnetic Resonance
Strongly out-of-equilibrium regimes in magnetic nanostructures exhibit novel properties, linked to the nonlinear nature of magnetization dynamics, which are of great fundamental and practical
Spin-current amplification by stimulated spin pumping
Stimulated emission is a process during which an atomic system gives away energy to create a coherent photon. It is fundamental to the operation of the optical amplifier. Here we propose two
Laser-induced torques in metallic antiferromagnets
We study the laser-induced torques in the antiferromagnet (AFM) Mn2Au. We find that even linearly polarized light may induce laser-induced torques in Mn2Au, i.e., the light does not have to be
Large spatial Schrödinger cat state using a levitated ferrimagnetic nanoparticle
The superposition principle is one of the main tenets of quantum mechanics. Despite its counter-intuitiveness, it has been experimentally verified using electrons, photons, atoms, and molecules.
Matter-wave interferometry using a levitated magnetic nanoparticle
The superposition principle is one of the bizarre predictions of quantum mechanics. Nevertheless, it has been experimentally verified using electrons, photons, atoms, and molecules. In this article,
Nutation resonance in ferromagnets
The inertial dynamics of magnetization in a ferromagnet is investigated theoretically. The analytically derived dynamic response upon microwave excitation shows two peaks: ferromagnetic and nutation
Optical determination of spin diffusion length and interfacial spin mixing conductance in epitaxial Pd/Fe bilayers.
  • Y. Li, W. Zhang, Z. Cheng
  • Physics
    Journal of physics. Condensed matter : an Institute of Physics journal
  • 2019
TLDR
A non-local Gilbert damping induced by spin pumping is demonstrated self-consistently and enables the determination of spin diffusion length in Pd and interfacial spin mixing conductance and paves the way toward the optical determination ofspin transport parameters.
...
...

References

SHOWING 1-10 OF 50 REFERENCES
Ultrafast magnetization enhancement in metallic multilayers driven by superdiffusive spin current.
TLDR
Spatially separate the spin dynamics using Ni/Ru/Fe magnetic trilayers and surprisingly find that optically induced demagnetization of the Ni layer transiently enhances the magnetizations of the Fe layer when the two layer magnetizations are initially aligned parallel.
Coherent ultrafast magnetism induced by femtosecond laser pulses
The quest for ultrafast magnetic processes has triggered a new field of research—femtomagnetism: using femtosecond laser pulses to demagnetize ferromagnetic metallic thin films. Despite being the
Nonthermal ultrafast optical control of the magnetization in garnet films
We demonstrate coherent optical control of the magnetization in ferrimagnetic garnet films on the femtosecond time scale through a combination of two different ultrafast and nonthermal photomagnetic
Explaining the paradoxical diversity of ultrafast laser-induced demagnetization.
TLDR
It is shown that a model based on electron-phonon-mediated spin-flip scattering explains both timescales on equal footing and concludes that the ultrafast magnetization dynamics can be well described disregarding highly excited electronic states, merely considering the thermalized electron system.
Ultrafast optical manipulation of magnetic order
The interaction of subpicosecond laser pulses with magnetically ordered materials has developed into a fascinating research topic in modern magnetism. From the discovery of subpicosecond
All-optical probe of coherent spin waves.
TLDR
Recording the temporal evolution of the precessing spins by a time-delayed probe-pulse provides a quantitative method to study locally the magnetic anisotropy, as well as switching and damping phenomena in micromagnetic structures.
Ultrafast non-thermal control of magnetization by instantaneous photomagnetic pulses
TLDR
It is demonstrated that circularly polarized femtosecond laser pulses can be used to non-thermally excite and coherently control the spin dynamics in magnets by way of the inverse Faraday effect, and offers prospects for applications of ultrafast lasers in magnetic devices.
Lateral drag of spin coherence in gallium arsenide
The importance of spin-transport phenomena in condensed-matter physics has increased over the past decade with the advent of metallic giant-magnetoresistive systems and spin-valve transistors. An
Ultrafast spin dynamics in ferromagnetic nickel.
TLDR
The relaxation processes of electrons and spins systems following the absorption of femtosecondoptical pulses in ferromagnetic nickel have been studied using optical and magneto-optical pump-probetechniques and the experimental results are adequately described by a model including three interacting reservoirs.
...
...