36 citations · 172 across the 20 of their papers we have counts for
21 papers
Self-modulation instability in high power ferromagnetic resonance of BiYIG nanodisks
Igor Ngouagnia Yemeli, Salvatore Perna, Diane Gouéré +9
We study the high power ferromagnetic resonance (FMR) of perpendicularly magnetized BiYIG nanodisks where the uniaxial anisotropy almost compensates the shape anisotropy. We observ…
Quantum Micromagnetic Theory of Magnons in Finite Nanostructures
Claudio Serpico, Salvatore Perna, Massimiliano d'Aquino
This paper presents a quantum field theoretical formalism for studying magnons in finite nanostructures with arbitrary shapes and spatially nonuniform ground states. It extends the…
Analytical solutions for ultra-fast precessional switching in inertial magnetization dynamics
Alessandro Fortunati, Massimiliano d'Aquino, Claudio Serpico
Here we consider the magnetization dynamics in ferromagnetic nanoparticles or films driven by external magnetic field pulses directed transverse to the initial equilibrium state. T…
Mode-resolved micromagnetics study of parametric spin wave excitation in thin-film disks
Maryam Massouras, Salvatore Perna, Massimiliano d'Aquino +2
We present a computational study of the parametric excitation of spin waves in thin film disks with a mode-resolved approach. The method involves projecting out the time-dependent…
Midpoint geometric integrators for inertial magnetization dynamics
Massimiliano d'Aquino, Salvatore Perna, Claudio Serpico
We consider the numerical solution of the inertial version of Landau-Lifshitz-Gilbert equation (iLLG), which describes high-frequency nutation on top of magnetization precession du…
Controlled Quasi-Latitudinal Solutions for ultra-fast Spin-Torque Precessional Magnetization Switching
Alessandro Fortunati, Massimiliano d'Aquino, Claudio Serpico
The aim of the paper is to present a novel class of time-dependent controls to realize ultra-fast magnetization switching in nanomagnets driven by spin-torques produced by spin-pol…
Degenerate and non-degenerate parametric excitation in YIG nanostructures
Hugo Merbouche, Ping Che, Titiksha Srivastava +10
We study experimentally the processes of parametric excitation in microscopic magnetically saturated disks of nanometer-thick Yttrium Iron Garnet. We show that, depending on the re…
Magnetization dynamics in a three-dimensional interconnected nanowire array
Rajgowrav Cheenikundil, Massimiliano d'Aquino, Riccardo Hertel
Three-dimensional magnetic nanostructures have recently emerged as artificial magnetic material types with unique properties bearing potential for applications, including magnonic…
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…
Complete identification of spin-wave eigenmodes excited by parametric pumping in YIG microdisks
Titiksha Srivastava, Hugo Merbouche, Igor Ngouagnia Yemeli +15
We present the parametric excitation of spin-wave modes in YIG micro-disks via parallel pumping. Their spectroscopy is performed using magnetic resonance force microscopy (MRFM), w…
Interpretation of spin-wave modes in Co/Ag nanodot arrays probed by broadband ferromagnetic resonance
Daniel Markó, Rajgowrav Cheenikundil, Julien Bauer +7
We present a detailed investigation of the magnetization dynamics in Co/Ag nanodots, which due to their size can support standing spin-wave (SSW) modes with complex spectral respon…
Micromagnetic frequency-domain simulation methods for magnonic systems
Massimiliano d'Aquino, Riccardo Hertel
We present efficient numerical methods for the simulation of small magnetization oscillations in three-dimensional micromagnetic systems. Magnetization dynamics is described by the…
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…
Computational Micromagnetics based on Normal Modes: bridging the gap between macrospin and full spatial discretization
S. Perna, F. Bruckner, C. Serpico +2
The Landau-Lifshitz equation governing magnetization dynamics is written in terms of the amplitudes of normal modes associated with the micromagnetic system's appropriate ground st…
Analysis in k-space of Magnetization Dynamics Driven by Strong Terahertz Fields
Valentino Scalera, Matthias Hudl, Kumar Neeraj +4
Demagnetization in a thin film due to a terahertz pulse of magnetic field is investigated. Linearized LLG equation in the Fourier space to describe the magnetization dynamics is de…
Experimental evidence of inertial dynamics in ferromagnets
Kumar Neeraj, Nilesh Awari, Sergey Kovalev +17
The understanding of how spins move at pico- and femtosecond time scales is the goal of much of modern research in condensed matter physics, with implications for ultrafast and mor…
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…
Large Scale Finite-Element Simulation of Micromagnetic Thermal Noise
Florian Bruckner, Massimiliano d'Aquino, Claudio Serpico +3
An efficient method for the calculation of ferromagnetic resonant modes of magnetic structures is presented. Finite-element discretization allows flexible geometries and location d…
Magnetization reversal driven by low dimensional chaos in a nanoscale ferromagnet
Eric Arturo Montoya, Salvatore Perna, Yu-Jin Chen +4
Energy-efficient switching of magnetization is a central problem in nonvolatile magnetic storage and magnetic neuromorphic computing. In the past two decades, several efficient met…
Signatures of Chaos in Thermal Switching of Nanomagnets
M. d'Aquino, C. Serpico, S. Perna +4
Thermally-activated magnetization dynamics of small nanoparticles subject to microwave (AC) external fields is studied. It is shown that, under sufficiently strong microwave excita…
Spin-wave instabilities in spin-transfer-driven magnetization dynamics
G. Bertotti, R. Bonin, M. d'Aquino +2
We study the stability of magnetization precessions induced in spin-transfer devices by the injection of spin-polarized electric currents. Instability conditions are derived by int…