803 citations · 7.2k across the 130 of their papers we have counts for
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Magnetism in AV3Sb5 (A = Cs, Rb, K): Complex Landscape of the Dynamical Magnetic Textures
Debjani Karmakar, Manuel Pereiro, Md. Nur Hasan +10
We have investigated the dynamical magnetic properties of the V-based kagome stibnite compounds by combining the ab-initio calculated magnetic parameters of a spin Hamiltonian like…
Ultrafast Demagnetization through Femtosecond Generation of Non-thermal Magnons
Markus Weißenhofer, Peter M. Oppeneer
Ultrafast laser excitation of ferromagnetic metals gives rise to correlated, highly non-equilibrium dynamics of electrons, spins and lattice, which are, however, poorly described b…
Ab initio investigation of laser-induced ultrafast demagnetization of L1 FePt: Intensity dependence and importance of electron coherence
M. S. Mrudul, Peter M. Oppeneer
We theoretically investigate the optically-induced demagnetization of ferromagnetic FePt using the time-dependent density functional theory (TDDFT). We compare the demagnetization…
Magnetization precession after non-collinear dual optical excitation
Sergii Parchenko, Davide Pecchio, Ritwik Mondal +2
We investigate the impact of non-collinear dual optical excitation on the magnetization precession in a permalloy thin film using two ultrashort laser pulses. By analyzing the magn…
Ultrafast Opto-magnetic Effects in the Extreme Ultraviolet Spectral Range
Martin Hennecke, Clemens von Korff Schmising, Kelvin Yao +20
Coherent light-matter interactions mediated by opto-magnetic phenomena like the inverse Faraday effect (IFE) are expected to provide a non-thermal pathway for ultrafast manipulatio…
Pressure induced electride phase formation in calcium: A key to its strange high-pressure behavior
P. Modak, Ashok K. Verma, Peter M. Oppeneer
Elemental calcium (Ca), a simple metal at ambient conditions, has attracted huge interest because of its unusual high-pressure behavior in structural, electrical, and melting prope…
Néel-Vector Switching and THz Spin-Wave Excitation in MnAu due to Femtosecond Spin-Transfer Torques
Markus Weißenhofer, Francesco Foggetti, Ulrich Nowak +1
Efficient and fast manipulation of antiferromagnets has to date remained a challenging task, hindering their application in spintronic devices. For ultrafast operation of such devi…
Element resolved evidence of superdiffusive terahertz spin current arising from ultrafast demagnetization process
R. Gupta, F. Cosco, R. S. Malik +13
Using element-specific measurements of the ultrafast demagnetization of Ru/FeCo heterostructures, we show that Ru can exhibit a significant magnetic contrast (3% asym…
Theory of magnetic spin and orbital Hall and Nernst effects in bulk ferromagnets
Leandro Salemi, Peter M. Oppeneer
The magnetic spin Hall effect (MSHE) is an anomalous charge-to-spin conversion phenomenon which occurs in ferromagnetic materials. In contrast to the conventional spin Hall effect…
First-principles theory of intrinsic spin and orbital Hall and Nernst effects in metallic monoatomic crystals
Leandro Salemi, Peter M. Oppeneer
The generation of spin and orbital currents is of crucial importance in the field of spin-orbitronics. In this work, using relativistic density functional theory and the Kubo linea…
Current induced switching in Mn2Au from first principles
Severin Selzer, Leandro Salemi, András Deák +4
It is well established that it is possible to switch certain antiferromagnets electrically, yet the interplay of Néel-spin-orbit torques and thermal activation is only poorly under…
Non-equilibrium self-assembly of spin-wave solitons in FePt nanoparticles
D. Turenne, A. Yaroslavtsev, X. Wang +36
Magnetic nanoparticles such as FePt in the L10-phase are the bedrock of our current data storage technology. As the grains become smaller to keep up with technological demands, the…
Influence of inter-sublattice coupling on the terahertz nutation spin dynamics in antiferromagnets
Ritwik Mondal, Peter M. Oppeneer
Spin nutation resonance has been well-explored in one-sublattice ferromagnets. Here, we investigate the spin nutation in two-sublattice antiferromagnets as well as, for comparison,…
Analyser-free, intensity-based wide-field magneto-optical microscopy
R. Schäfer, Peter M. Oppeneer, Alexey Ognev +2
In conventional Kerr- and Faraday microscopy the sample is illuminated with plane-polarised light and a magnetic domain contrast is generated by an analyser making use of the Kerr-…
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…
Theory of out-of-equilibrium electron and phonon dynamics in metals after ultrafast laser excitation
Ulrike Ritzmann, Peter M. Oppeneer, Pablo Maldonado
The out-of-equilibrium dynamics of electrons and phonons upon laser excitation are often described by the two-temperature model, which assumes that both subsystems are separately i…
High-frequency magnon excitation due to femtosecond spin-transfer torques
Ulrike Ritzmann, Pavel Baláž, Pablo Maldonado +2
Femtosecond laser pulses can induce ultrafast demagnetization as well as generate bursts of hot electron spin currents. In trilayer spin valves consisting of two metallic ferromagn…
Coherent modulation of the electron temperature and electron-phonon couplings in a 2D material
Yingchao Zhang, Xun Shi, Wenjing You +9
Ultrashort light pulses can selectively excite charges, spins and phonons in materials, providing a powerful approach for manipulating their properties. Here we use femtosecond las…
Tracking the Ultrafast Non-Equilibrium Energy Flow between Electronic and Lattice Degrees of Freedom in Crystalline Nickel
P. Maldonado, T. Chase, A. H. Reid +9
Femtosecond laser excitation of solid-state systems creates non-equilibrium hot electrons that cool down by transferring their energy to other degrees of freedom and ultimately to…
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…
Terahertz spin dynamics driven by a field-derivative torque
Ritwik Mondal, Andreas Donges, Ulrike Ritzmann +2
Efficient manipulation of magnetization at ultrashort time scales is of particular interest for future technology. Here, we numerically investigate the influence of the so-called f…
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.…