177 citations · 1.2k across the 24 of their papers we have counts for
24 papers
Giant perpendicular Edelstein polarization in 2D compensated magnets via bichromatic Floquet driving
Mohsen Yarmohammadi, Daegeun Jo, Marco Berritta +3
While unconventional -wave magnets can generate nonrelativistic Edelstein polarizations, spin-group symmetries strictly forbid these responses in unconventional magnets with hig…
Relativistic theory for coupled orbital and spin angular momentum dynamics in magnetic systems
Subhadip Santra, Ritwik Mondal, Marco Berritta +1
We develop a complete relativistic theory to describe the dynamics of electronic angular momentum including both spin (S) and orbital (L) contributions in magnetic systems. We star…
Spin polarization engineering in -wave altermagnets
Mohsen Yarmohammadi, Marco Berritta, Marin Bukov +3
Altermagnets host unconventional spin-polarized bands despite zero net magnetization, but controlling their spin structure remains challenging. We propose a multi-field approach to…
Magneto-Optical Detection of the Orbital Hall Effect in Chromium
Igor Lyalin, Sanaz Alikhah, Marco Berritta +2
The orbital Hall effect has been theoretically predicted but its direct observation is a challenge. Here, we report the magneto-optical detection of current-induced orbital accumul…
Accounting for Quantum Effects in Atomistic Spin Dynamics
Marco Berritta, Stefano Scali, Federico Cerisola +1
Atomistic spin dynamics (ASD) is a standard tool to model the magnetization dynamics of a variety of materials. The fundamental dynamical model underlying ASD is entirely classical…
Optimal Covariance Cleaning for Heavy-Tailed Distributions: Insights from Information Theory
Christian Bongiorno, Marco Berritta
In optimal covariance cleaning theory, minimizing the Frobenius norm between the true population covariance matrix and a rotational invariant estimator is a key step. This estimato…
Quantum-classical correspondence in spin-boson equilibrium states at arbitrary coupling
Federico Cerisola, Marco Berritta, Stefano Scali +3
The equilibrium properties of nanoscale systems can deviate significantly from standard thermodynamics due to their coupling to an environment. For the generalised -angled spin-…
Ultrafast coherent all-optical switching of an antiferromagnet with the inverse Faraday effect
Tobias Dannegger, Marco Berritta, Karel Carva +4
We explore the possibility of ultrafast, coherent all-optical magnetization switching in antiferromagnets by studying the action of the inverse Faraday effect in CrPt, an easy-plan…
Frequency-independent terahertz anomalous Hall effect in DyCo, CoFe and GdFe thin films from DC to 40 THz
Tom S. Seifert, Ulrike Martens, Florin Radu +11
The anomalous Hall effect (AHE) is a fundamental spintronic charge-to-charge-current conversion phenomenon and closely related to spin-to-charge-current conversion by the spin Hall…
Quantitative comparison of electrically induced spin and orbital polarizations in heavy-metal/3d-metal bilayers
Leandro Salemi, Marco Berritta, Peter M. Oppeneer
Electrical control of magnetization is of crucial importance for integrated spintronics devices. Spin-orbit torques (SOT) in heavy-metal/ferromagnetic heterostructures have emerged…
Orbitally Dominated Rashba-Edelstein Effect in Noncentrosymmetric Antiferromagnets
Leandro Salemi, Marco Berritta, Ashis K. Nandy +1
Efficient manipulation of magnetic order with electric current pulses is desirable for achieving fast spintronic devices. The Rashba-Edelstein effect, wherein a spin polarization i…
Distinguishing Local and non-Local Demagnetization in Ferromagnetic FePt Nanoparticles
Patrick W. Granitzka, Alexander H. Reid, Jerome Hurst +21
Time-resolved coherent X-ray diffraction is used to measure the spatially resolved magnetization structure within FePt nanoparticles during laser-induced ultrafast demagnetization.…
Magneto-optical properties of Au upon the injection of hot spin-polarized electrons across Fe/Au(001) interfaces
A. Alekhin, I. Razdolski, M. Berritta +7
We demonstrate a novel method for the excitation of sizable magneto-optical effects in Au by means of the laser-induced injection of hot spin-polarized electrons in Au/Fe/MgO(001)…
Unified theory of magnetization dynamics with relativistic and nonrelativistic spin torques
Ritwik Mondal, Marco Berritta, Peter M. Oppeneer
Spin torques play a crucial role in operative properties of modern spintronic devices. To study current-driven magnetization dynamics, spin-torque terms providing the action of spi…
Ultrafast demagnetization of Pt magnetic moment in L1-FePt probed by hard x-ray free electron laser
Kohei Yamamoto, Yuya Kubota, Motohiro Suzuki +15
We demonstrate ultrafast magnetization dynamics in a 5d transition metal using circularly-polarized x-ray free electron laser in the hard x-ray region. A decay time of light-induce…
Generalisation of Gilbert damping and magnetic inertia parameter as a series of higher-order relativistic terms
Ritwik Mondal, Marco Berritta, Peter M. Oppeneer
The phenomenological Landau-Lifshitz-Gilbert (LLG) equation of motion remains as the cornerstone of contemporary magnetisation dynamics studies, wherein the Gilbert damping paramet…
Magneto-Optical Detection of the Spin Hall Effect in Pt and W Thin Films
Christian Stamm, Christoph Murer, Marco Berritta +4
Here we report the measurement of the interfacial spin accumulation induced by the spin Hall effect in Pt and W thin films using magneto-optical Kerr microscopy. We show that the K…
Relativistic theory of magnetic inertia in ultrafast spin dynamics
Ritwik Mondal, Marco Berritta, Ashis K. Nandy +1
The influence of possible magnetic inertia effects has recently drawn attention in ultrafast magnetization dynamics and switching. Here we derive rigorously a description of inerti…
Signatures of relativistic spin-light coupling in ultrafast magneto-optical pump-probe experiments
Ritwik Mondal, Marco Berritta, Peter M. Oppeneer
Femtosecond magneto-optical pump-probe measurements of ultrafast demagnetization show an intriguing difference in the first 100 fs of the magneto-optical Kerr response depending on…
Relativistic theory of spin relaxation mechanisms in the Landau-Lifshitz-Gilbert equation of spin dynamics
Ritwik Mondal, Marco Berritta, Peter M. Oppeneer
Starting from the Dirac-Kohn-Sham equation we derive the relativistic equation of motion of spin angular momentum in a magnetic solid under an external electromagnetic field. This…
Magnetization switching of FePt nanoparticle recording medium by femtosecond laser pulses
R. John, M. Berritta, D. Hinzke +11
Manipulation of magnetization with ultrashort laser pulses is promising for information storage device applications. The dynamic of the magnetization response depends on the energy…
Ab Initio Theory of Coherent Laser-Induced Magnetization in Metals
Marco Berritta, Ritwik Mondal, Karel Carva +1
We present the first materials specific ab initio theory of the magnetization induced by circularly polarized laser light in metals. Our calculations are based on non-linear densit…
Ab initio investigation of light-induced relativistic spin-flip effects in magneto-optics
Ritwik Mondal, Marco Berritta, Karel Carva +1
Excitation of a metallic ferromagnet such as Ni with an intensive femtosecond laser pulse causes an ultrafast demagnetization within approximately 300 fs. It was proposed that the…
Design of a Lambda system for population transfer in superconducting nanocircuits
G. Falci, A. La Cognata, M. Berritta +3
The implementation of a Lambda scheme in superconducting artificial atoms could allow detec- tion of stimulated Raman adiabatic passage (STIRAP) and other quantum manipulations in…