A5000014202- Magnetic properties of thin films
- Magneto-Optical Properties and Applications
- Magnetic Properties and Applications
- Quantum and electron transport phenomena
- Terahertz technology and applications
- Physics of Superconductivity and Magnetism
- Semiconductor Quantum Structures and Devices
- Mechanical and Optical Resonators
- Laser-Matter Interactions and Applications
- Magnetic and transport properties of perovskites and related materials
- Geomagnetism and Paleomagnetism Studies
- Theoretical and Computational Physics
- Photonic and Optical Devices
- Phase-change materials and chalcogenides
- Advanced Electron Microscopy Techniques and Applications
- Spectroscopy and Quantum Chemical Studies
- Photorefractive and Nonlinear Optics
- Neural Networks and Reservoir Computing
- Quantum optics and atomic interactions
- Topological Materials and Phenomena
- Atomic and Subatomic Physics Research
- Photonic Crystals and Applications
- Multiferroics and related materials
- Magnetic Properties of Alloys
- Force Microscopy Techniques and Applications
Radboud University Nijmegen
2016-2025
Radboud Institute for Molecular Life Sciences
2014-2025
Radboud University Medical Center
2014-2025
FELIX Laboratory
2021
MIREA - Russian Technological University
2016-2020
Heriot-Watt University
2019
TU Dortmund University
2019
Bauman Moscow State Technical University
2015-2016
Chemnitz University of Technology
2016
Western Digital (United States)
2016
The interaction of subpicosecond laser pulses with magnetically ordered materials has developed into a fascinating research topic in modern magnetism. From the discovery demagnetization over decade ago to recent demonstration magnetization reversal by single $40\phantom{\rule{0.3em}{0ex}}\mathrm{fs}$ pulse, manipulation magnetic order ultrashort become fundamentally challenging potentially high impact for future spintronics, data storage and manipulation, quantum computation. Understanding...
We experimentally demonstrate that the magnetization can be reversed in a reproducible manner by single 40 femtosecond circularly polarized laser pulse, without any applied magnetic field. This optically induced ultrafast reversal previously believed impossible is combined result of heating system to just below Curie point and light simultaneously acting as The direction this opto-magnetic switching determined only helicity light. finding reveals an efficient pathway for writing bits at...
This article reviews static and dynamic interfacial effects in magnetism, focusing on interfacially-driven magnetic phenomena associated with spin-orbit coupling intrinsic symmetry breaking at interfaces. It provides a historical background literature survey, but focuses recent progress, identifying the most exciting new scientific results pointing to promising future research directions. starts an introduction overview of how basic properties are affected by interfaces, then turns...
Using time-resolved single-shot pump-probe microscopy we unveil the mechanism and time scale of all-optical magnetization reversal by a single circularly polarized 100 fs laser pulse. We demonstrate that has linear character, i.e., does not involve precession but occurs via strongly nonequilibrium state. Calculations show which can be achieved this is within 10 ps for 30 nm domain. two subpicosecond pulses 5 microm domain magnetic information recorded readout ps, fastest "write-read" event...
This review discusses the recent studies of magnetization dynamics and role angular momentum in thin films ferrimagnetic rare-earth–transition metal (RE–TM) alloys, e.g. GdFeCo, where both momenta are temperature dependent. It has been experimentally demonstrated that can be manipulated even reversed by a single 40 fs laser pulse, without any applied magnetic field. switching is found to follow novel reversal pathway, shown however depend crucially on net momentum, reflecting balance two...
Using magneto-optical microscopy in combination with ellipsometry measurements, we show that all-optical switching polarized femtosecond laser pulses ferrimagnetic GdFeCo is subjected to a threshold fluence absorbed the magnetic layer, independent of either excitation wavelength or polarization pulse. Furthermore, present quantitative explanation intensity window which helicity-dependent (AO-HDS) occurs, based on circular dichroism. This consistent all experimental findings AO-HDS so far,...
We propose a general theoretical framework for ultrafast laser-induced spin dynamics in multisublattice magnets. distinguish relaxation of relativistic and exchange origin show that when the former dominates, nonequivalent sublattices have distinct despite their strong coupling. Even more interesting, dominated regime can highly counterintuitive transitions between parallel antiparallel alignment. This allows us to explain recent experiments with antiferromagnetically coupled sublattices,...
We present results of detailed experimental and theoretical studies all-optical magnetization reversal by single circularly-polarized laser pulses in ferrimagnetic rare earth---transition metal (RE--TM) alloys Gd${}_{x}$Fe${}_{90\ensuremath{-}x}$Co${}_{10}$ ($20%<x<28%$). Using single-shot time-resolved magneto-optical microscopy multiscale simulations, we identified described the unconventional path followed during process. This does not involve precessional motion but is governed...
Abstract Ultrafast non-thermal manipulation of magnetization by light relies on either indirect coupling the electric field component with spins via spin-orbit interaction or direct between magnetic and spins. Here we propose a scenario for optical modification exchange interaction, one strongest quantum effects strength 10 3 Tesla. We demonstrate that this isotropic opto-magnetic effect, which can be called inverse magneto-refraction, is allowed in material any symmetry. Its existence...
Ever since the first observation of all-optical switching magnetization in ferrimagnetic alloy GdFeCo using femtosecond laser pulses, there has been significant interest exploiting this process for data-recording applications. In particular, ultrafast speed magnetic reversal can enable writing speeds associated with memory devices to be potentially pushed towards THz frequencies. This work reports development perpendicular tunnel junctions incorporating a stack Tb/Co nanolayers whose...