scholarly journals Identification and time-resolved study of ferrimagnetic spin-wave modes in a microwave cavity in the strong-coupling regime

2020 ◽  
Vol 101 (1) ◽  
Author(s):  
Angelo Leo ◽  
Anna Grazia Monteduro ◽  
Silvia Rizzato ◽  
Luigi Martina ◽  
Giuseppe Maruccio
Keyword(s):  
Strong Coupling ◽  
Spin Wave ◽  
Microwave Cavity ◽  
Strong Coupling Regime ◽  
Time Resolved ◽  
Wave Modes

scholarly journals Vesicle adhesion in the electrostatic strong-coupling regime studied by time-resolved small-angle X-ray scattering

Soft Matter ◽  
2020 ◽  
Vol 16 (17) ◽  
pp. 4142-4154 ◽  
Author(s):  
Karlo Komorowski ◽  
Jannis Schaeper ◽  
Michael Sztucki ◽  
Lewis Sharpnack ◽  
Gerrit Brehm ◽  
...  
Keyword(s):  
Strong Coupling ◽  
Small Angle ◽  
Lipid Vesicles ◽  
Strong Coupling Regime ◽  
Divalent Ions ◽  
Time Resolved ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

We have used time-resolved small-angle X-ray scattering (SAXS) to study the adhesion of lipid vesicles in the electrostatic strong-coupling regime induced by divalent ions.

scholarly journals Demonstration of k-vector selective microscopy for nanoscale mapping of higher order spin wave modes

Nanoscale ◽  
2020 ◽  
Vol 12 (33) ◽  
pp. 17238-17244 ◽  
Author(s):  
Nick Träger ◽  
Paweł Gruszecki ◽  
Filip Lisiecki ◽  
Felix Groß ◽  
Johannes Förster ◽  
...  
Keyword(s):  
Spin Wave ◽  
Real Space ◽  
Higher Order ◽  
Time Resolved ◽  
Excited Mode ◽  
Wave Modes

Time resolved STXM provides deep insights into efficient excitation of symmetric and antisysmmetric higher order spin wave modes in magnonic waveguides. k-selective imaging reveals real space information of simultaneously excited mode patterns.

scholarly journals Ultrafast magnetization dynamics in a nanoscale three-dimensional cobalt tetrapod structure

Nanoscale ◽  
2018 ◽  
Vol 10 (21) ◽  
pp. 9981-9986 ◽  
Author(s):  
Sourav Sahoo ◽  
Sucheta Mondal ◽  
Gwilym Williams ◽  
Andrew May ◽  
Sam Ladak ◽  
...  
Keyword(s):  
Spin Wave ◽  
Numerical Study ◽  
Spin Dynamics ◽  
Three Dimensional ◽  
Magnetization Dynamics ◽  
Time Resolved ◽  
Complex Spin ◽  
Ultrafast Magnetization ◽  
Wave Modes

Time resolved measurement and numerical study of ultrafast spin dynamics in a 3D Co tetrapod structure revealed complex spin-wave modes.

Strong Coupling: Polariton Bose Condensation

2017 ◽  
Author(s):  
Alexey V. Kavokin ◽  
Jeremy J. Baumberg ◽  
Guillaume Malpuech ◽  
Fabrice P. Laussy
Keyword(s):  
Strong Coupling ◽  
Room Temperature ◽  
Elevated Temperatures ◽  
Dissipative System ◽  
Bose Condensation ◽  
Einstein Condensation ◽  
Strong Coupling Regime ◽  
Stimulated Scattering ◽  
Exciton Polaritons ◽  
Bose Einstein

In this Chapter we address the physics of Bose-Einstein condensation and its implications to a driven-dissipative system such as the polariton laser. We discuss the dynamics of exciton-polaritons non-resonantly pumped within a microcavity in the strong coupling regime. It is shown how the stimulated scattering of exciton-polaritons leads to formation of bosonic condensates that may be stable at elevated temperatures, including room temperature.

Strong coupling: resonant effects

2017 ◽  
Author(s):  
Alexey V. Kavokin ◽  
Jeremy J. Baumberg ◽  
Guillaume Malpuech ◽  
Fabrice P. Laussy
Keyword(s):  
Strong Coupling ◽  
Experimental Studies ◽  
Strong Coupling Regime ◽  
Theoretical Studies ◽  
Stimulated Scattering ◽  
Quantum Theories ◽  
Pump Probe ◽  
Exciton Polaritons ◽  
Linear Optical Properties ◽  
Experimental And Theoretical Studies

This chapter presents experimental studies performed on planar semiconductor microcavities in the strong-coupling regime. The first section reviews linear experiments performed in the 1990s that evidence the linear optical properties of cavity exciton-polaritons. The chapter is then focused on experimental and theoretical studies of resonantly excited microcavity emission. We mainly describe experimental configuations in which stimulated scattering was observed due to formation of a dynamical condensate of polaritons. Pump-probe and cw experiments are described in addition. Dressing of the polariton dispersion and bistability of the polariton system due to inter-condensate interactions are discussed. The semiclassical and the quantum theories of these effects are presented and their results analysed. The potential for realization of devices is also discussed.

scholarly journals Electrical characterisation of higher order spin wave modes in vortex-based magnetic tunnel junctions

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Alex. S. Jenkins ◽  
Lara San Emeterio Alvarez ◽  
Samh Memshawy ◽  
Paolo Bortolotti ◽  
Vincent Cros ◽  
...  
Keyword(s):  
Spin Wave ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Higher Order ◽  
Spin Torque ◽  
Micromagnetic Simulations ◽  
Higher Order Modes ◽  
Spin Diode ◽  
Super High Frequency ◽  
Wave Modes

AbstractNiFe-based vortex spin-torque nano-oscillators (STNO) have been shown to be rich dynamic systems which can operate as efficient frequency generators and detectors, but with a limitation in frequency determined by the gyrotropic frequency, typically sub-GHz. In this report, we present a detailed analysis of the nature of the higher order spin wave modes which exist in the Super High Frequency range (3–30 GHz). This is achieved via micromagnetic simulations and electrical characterisation in magnetic tunnel junctions, both directly via the spin-diode effect and indirectly via the measurement of the coupling with the gyrotropic critical current. The excitation mechanism and spatial profile of the modes are shown to have a complex dependence on the vortex core position. Additionally, the inter-mode coupling between the fundamental gyrotropic mode and the higher order modes is shown to reduce or enhance the effective damping depending upon the sense of propagation of the confined spin wave.

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