231 citations · 782 across the 29 of their papers we have counts for
11 papers · 1 filter
Relaxation pathways and emergence of domains in square artificial spin ice
Matteo Menniti, Naëmi Leo, Pedro Villalba-González +2
Multi-domain states of square artificial spin ice show a range of different morphologies ranging from simple stripe-like domains to more organically shaped coral domains. To model…
Terahertz metamaterials for light-driven magnetism
M. Pancaldi, P. Vavassori, S. Bonetti
We describe the design of two types of metamaterials aimed at enhancing terahertz field pulses that can be used to control the magnetic state in condensed matter systems. The first…
Evidence of extreme domain wall speeds under ultrafast optical excitation
Rahul Jangid, Nanna Zhou Hagström, Meera Madhavi +14
Time-resolved ultrafast EUV magnetic scattering was used to test a recent prediction of >10 km/s domain wall speeds by optically exciting a magnetic sample with a nanoscale labyrin…
Micromagnetic study of inertial spin waves in ferromagnetic nanodots
Massimiliano d'Aquino, Salvatore Perna, Matteo Pancaldi +3
Here we report the possibility to excite ultra-short spin waves in ferromagnetic thin-films by using time-harmonic electromagnetic fields with terahertz frequency. Such ultra-fast…
Megahertz-rate Ultrafast X-ray Scattering and Holographic Imaging at the European XFEL
Nanna Zhou Hagström, Michael Schneider, Nico Kerber +97
The advent of X-ray free-electron lasers (XFELs) has revolutionized fundamental science, from atomic to condensed matter physics, from chemistry to biology, giving researchers acce…
Magnetization switching in the inertial regime
Kumar Neeraj, Matteo Pancaldi, Valentino Scalera +4
We have numerically solved the Landau-Lifshitz-Gilbert (LLG) equation in its standard and inertial forms to study the magnetization switching dynamics in a thin film ferromagn…
Chiral switching and dynamic barrier reductions in artificial square ice
Naëmi Leo, Matteo Pancaldi, Sabri Koraltan +10
Collective dynamics in lithographically-defined artificial spin ices offer profound insights into emergent correlations and phase transitions of geometrically-frustrated Ising spin…
Nanoscale transient magnetization gratings excited and probed by femtosecond extreme ultraviolet pulses
D. Ksenzov, A. A. Maznev, V. Unni +15
We utilize coherent femtosecond extreme ultraviolet (EUV) pulses derived from a free electron laser (FEL) to generate transient periodic magnetization patterns with periods as shor…
Nonlinear magnetization dynamics driven by strong terahertz fields
Matthias Hudl, Massimiliano d'Aquino, Matteo Pancaldi +7
We present a comprehensive experimental and numerical study of magnetization dynamics triggered in a thin metallic film by single-cycle terahertz pulses of MV/m electric f…
Selective and Fast Plasmon-Assisted Photo-Heating of Nanomagnets; A New Route for Opto-Activated Nanomagnetic Logic and Artificial Spin Systems
Matteo Pancaldi, Naëmi Leo, Paolo Vavassori
Thermal relaxation of nanoscale magnetic islands, mimicking Ising macrospins, is indispensable for studies of geometrically frustrated artificial spin systems and low-energy nanoma…
THz-driven demagnetization with Perpendicular Magnetic Anisotropy: Towards ultrafast ballistic switching
Debanjan Polley, Matteo Pancaldi, Matthias Hudl +3
We study THz-driven spin dynamics in thin CoPt films with perpendicular magnetic anisotropy. Femtosecond magneto-optical Kerr effect measurements show that demagnetization amplitud…