39 citations · 191 across the 20 of their papers we have counts for
22 papers
Spurious spin nutation modes arising from truncated memory effects
Markus Weißenhofer, Ritwik Mondal, M. S. Mrudul +1
Spin dynamics is conventionally treated as inertia-free. The inertial Landau-Lifshitz-Gilbert equation (iLLG) extends this with a second-order time derivative, predicting a high-fr…
A crystal-field route to THz-driven magnetization
T. Zalewski, M. S. Mrudul, Y. Lee +5
Light carries angular momentum, but the microscopic pathways that transform it into magnetization remain elusive. Here we establish that crystal-field excitations, historically vie…
Symmetry-Enforced Chiral Phonons in Altermagnets via Magnon-Phonon Coupling
Philipp Rieger, Markus Weißenhofer, Sergiy Mankovsky +1
Chiral phonons are attractive for spintronics applications, however, their zero-field generation in conventional antiferromagnets is forbidden by combined parity and time-reversal…
Huge ultrafast spin Seebeck effect mediated by laser-excited superdiffusive magnon currents
Luca Mikadze, Peter M. Oppeneer, Markus Weißenhofer
Subpicosecond laser excitation of ferromagnetic metals induces strongly nonequilibrium dynamics involving scattering and transport of electrons, phonons, and magnons. Widely used t…
Symmetry-Selective Topological Magnon Engineering by Phonon Angular Momentum
Markus Weißenhofer, Philipp Rieger, Chandan K. Singh +3
Dynamical control of Berry curvature remains an outstanding challenge in the engineering of topological phases. Here, we demonstrate control of magnon band structures via coherentl…
Generation of Phonons with Angular Momentum During Ultrafast Demagnetization
M. S. Mrudul, Markus Weißenhofer, Peter M. Oppeneer
A major question in the field of femtosecond laser-induced demagnetization is whereto the angular momentum lost by the electrons is transferred. Recent ultrafast electron diffracti…
Chiral Phonons Arising From Chirality-Selective Magnon-Phonon Coupling
Markus Weißenhofer, Philipp Rieger, M. S. Mrudul +3
Chiral phonons are desirable for applications in spintronics but their generation and control remains a challenge.Here we demonstrate the emergence of truly chiral phonons from sel…
Spin-lattice couplings in ferromagnets: analysis from first-principles
I. P. Miranda, M. Pankratova, M. Weißenhofer +8
Magnetoelasticity plays a crucial role in numerous magnetic phenomena, including magnetocalorics, magnon excitation via acoustic waves, and ultrafast demagnetization/Einstein-de Ha…
Element-selective probing of ultrafast ferromagnetic--antiferromagnetic order dynamics in Fe/CoO bilayers
Chowdhury S. Awsaf, Sangeeta Thakur, Markus Weißenhofer +6
The ultrafast magnetization dynamics of an epitaxial Fe/CoO bilayer on Ag(001) is examined in an element-resolved way by resonant soft-x-ray reflectivity. The transient magnetic li…
Atomistic spin dynamics simulations of magnonic spin Seebeck and spin Nernst effects in altermagnets
Markus Weißenhofer, Alberto Marmodoro
Magnon band structures in altermagnets are characterized by an energy splitting of modes with opposite chirality, even in the absence of applied external fields and relativistic ef…
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…
Defect-enhanced diffusion of magnetic skyrmions
Philipp Rieger, Markus Weißenhofer, Ulrich Nowak
Defects, i.e. inhomogeneities of the underlying lattice, are ubiquitous in magnetic materials and can have a crucial impact on their applicability in spintronic devices. For magnet…
Calculating spin-lattice interactions in ferro- and antiferromagnets: the role of symmetry, dimension and frustration
Hannah Lange, Sergiy Mankovsky, Svitlana Polesya +3
Recently, the interplay between spin and lattice degrees of freedom has gained a lot of attention due to its importance for various fundamental phenomena as well as for spintronic…
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…
Rotationally invariant formulation of spin-lattice coupling in multi-scale modeling
Markus Weißenhofer, Hannah Lange, Akashdeep Kamra +4
In the spirit of multi-scale modeling, we develop a theoretical framework for spin-lattice coupling that connects, on the one hand, to ab initio calculations of spin-lattice coupli…
Enhanced thermally-activated skyrmion diffusion with tunable effective gyrotropic force
Takaaki Dohi, Markus Weißenhofer, Nico Kerber +12
Magnetic skyrmions, topologically-stabilized spin textures that emerge in magnetic systems, have garnered considerable interest due to a variety of electromagnetic responses that a…
Angular momentum transfer via relativistic spin-lattice coupling from first principles
Sergiy Mankovsky, Svitlana Polesya, Hannah Lange +3
The transfer and control of angular momentum is a key aspect for spintronic applications. Only recently, it was shown that it is possible to transfer angular momentum from the spin…
Skyrmions as quasiparticles: free energy and entropy
Daniel Schick, Markus Weißenhofer, Levente Rózsa +1
The free energy and the entropy of magnetic skyrmions with respect to the collinear state are calculated for a (PtIr)/Fe bilayer on Pd(111) via atomistic spin mod…
Spin waves in skyrmionic structures with various topological charges
Levente Rózsa, Markus Weißenhofer, Ulrich Nowak
Equilibrium properties and localised magnon excitations are investigated in topologically distinct skyrmionic textures. The observed shape of the structures and their orientation o…
On the degeneracy of ordered ground state configurations of the aspherical Gaussian core model
Davide Pini, Markus Weissenhofer, Gerhard Kahl
We provide rigorous evidence that the ordered ground state configurations of a system of parallel oriented, ellipsoidal particles, interacting via a Gaussian interaction (termed in…
Anisotropic skyrmion diffusion controlled by field-induced symmetry breaking
Nico Kerber, Markus Weißenhofer, Klaus Raab +4
Diffusion of particles has wide repercussions ranging from particle-based soft matter systems to solid state systems with particular electronic properties. Recently, in the field o…
Orientation dependent current-induced motion of skyrmions with various topologies
Markus Weißenhofer, Ulrich Nowak
We study the current-driven motion of metastable localized spin structures with various topological charges in a (PtIr)/Fe bilayer on a Pd(111) surface by combining a…