115 citations · 1.9k across the 125 of their papers we have counts for
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Rectification of the spin Seebeck current in noncollinear antiferromagnets
L. Chotorlishvili, Xi-guang Wang, A. Dyrdal +4
In the absence of an external magnetic field and a spin-polarized charge current, an antiferromagnetic system supports two degenerate magnon modes. An applied thermal bias activate…
Rotating edge-field driven processing of chiral spin textures in racetrack devices
Alexander F. Schäffer, Pia Siegl, Martin Stier +5
Topologically distinct magnetic structures like skyrmions, domain walls, and the uniformly magnetized state have multiple applications in logic devices, sensors, and as bits of inf…
Electron-magnon spin conversion and magnonic spin pumping in antiferromagnet/heavy metal heterostructure
Xi-guang Wang, Yao-Zhuang Nie, L. Chotorlishvili +3
We study the exchange between electron and magnon spins at the interface of an antiferromagnet and a heavy metal at finite temperatures. The underlying physical mechanism is based…
Highly Tunable Spin-Orbit Torque and Anisotropic Magnetoresistance in a Topological Insulator Thin Film Attached to Ferromagnetic Layer
Ali G. Moghaddam, Alireza Qaiumzadeh, Anna Dyrdał +1
We investigate spin-charge conversion phenomena in hybrid structures of topological insulator (TI) thin films and magnetic insulators. We find an anisotropic inverse spin-galvanic…
Steering magnonic dynamics and permeability at exceptional points in a parity-time symmetric waveguide
Xi-guang Wang, Guang-hua Guo, Jamal Berakdar
Tuning the low-energy magnetic dynamics is a key element in designing novel magnetic metamaterials, spintronic devices and magnonic logic circuits. This study uncovers a new, highl…
Twisting and tweezing the spin wave: on vortices, skyrmions, helical waves, and the magnonic spiral phase plate
Chenglong Jia, Decheng Ma, Alexander F. Schäffer +1
Spin waves are the low-energy excitations of magnetically ordered materials. They are key elements in the stability analysis of the ordered phase and have a wealth of technological…
Non-destructive Ultrafast Steering of Magnetic Vortex by Terahertz Pulses
Dongxing Yu, Jiyong Kang, Jamal Berakdar +1
Electric control of magnetic vortex dynamics in a reproducible way and on an ultrafast time scale is key element in the quest for efficient spintronic devices with low-energy consu…
Conduction of surface electrons in a topological insulator with spatially random magnetization
S. Kudła, A. Dyrdał, V. K. Dugaev +2
Using the Green functions method we study transport properties of surface electrons in topological insulators in the presence of a correlated random exchange field. Such an exchang…
Stochastic dynamics and pattern formation of geometrically confined skyrmions
Alexander F. Schäffer, Levente Rózsa, Jamal Berakdar +2
Ensembles of magnetic skyrmions in confined geometries are shown to exhibit thermally driven motion on two different time scales. The intrinsic fluctuating dynamics (ps)…
Thermally assisted Skyrmion drag in a nonuniform electric field
Xi-guang Wang, L. Chotorlishvili, Guang-hua Guo +2
Magnetic skyrmions are topologically protected excitations of the magnetization vector field with promising applications in spintronics and spin-caloritronics, particularly due to…
Influence of spin-orbit and spin-Hall effects on the spin Seebeck current beyond linear response
L. Chotorlishvili, Z. Toklikishvili, X. -G. Wang +3
We study the spin transport theoretically in heterostructures consisting of a ferromagnetic metallic thin film sandwiched between heavy-metal and oxide layers. The spin current in…
All-Optical Generation and Tuning of Ultrafast Spin-Hall Current via Optical Vortices
Jonas Wätzel, Jamal Berakdar
Spin Hall effect, one of the cornerstones in spintronics refers to the emergence of an imbalance in the spin density transverse to a charge flow in a sample under voltage bias. Thi…
Electric control of emergent magnonic spin current and dynamic multiferroicity in magnetic insulators at finite temperatures
Xi-guang Wang, L. Chotorlishvili, Guang-hua Guo +1
Conversion of thermal energy into magnonic spin currents and/or effective electric polarization promises new device functionalities. A versatile approach is presented here for gene…
Current-induced spin polarization in isotropic k-cubed Rashba model: Theoretical study for p-doped semiconductor heterostructures and perovskite oxides interfaces
L. Karwacki, A. Dyrdal, J. Berakdar +1
Using the Matsubara Green's function formalism we calculate the temperature dependence of the nonequilibrium spin polarization induced by an external electric field in the presence…
Ultrafast nanoscale magnetic switching via intense picosecond electron bunches
Alexander F. Schäffer, Hermann A. Dürr, Jamal Berakdar
The magnetic field associated with a picosecond intense electron pulse is shown to switch locally the magnetization of extended films and nanostructures and to ignite locally spin…
Size-dependent frequency bands in the ferromagnetic resonance of a Fe-nanocube
Alexander F. Schäffer, Alexander Sukhov, Jamal Berakdar
Using full micromagnetic simulations we calculate the spectra of ferromagnetic resonance (FMR) for an iron (core-shell) nanocube and show that the FMR characteristics are strongly…
Energy loss spectroscopy of Buckminster C60 with twisted electrons: Influence of orbital angular momentum transfer on plasmon generation
M. Schüler, J. Berakdar
Recent experimental progress in creating and controlling singular electron beams that carry orbital angular momentum allows for new types of local spectroscopies. We theoretically…
Topological insulator in a helicoidal magnetization field
S. Stagraczynski, L. Chotorlishvili, V. K. Dugaev +4
A key feature of topological insulators is the robustness of the electron energy spectrum. At a surface of a topological insulator, Dirac point is protected by the characteristic s…
Charge and spin dynamics driven by ultrashort extreme broadband pulses: a theory perspective
Andrey S. Moskalenko, Zhen-Gang Zhu, Jamal Berakdar
This article gives an overview on recent theoretical progress in controlling the charge and spin dynamics in low-dimensional electronic systems by means of ultrashort and ultrabroa…
Ultrafast transient dynamics in composite multiferroics
Chenglong Jia, Ning Zhang, Alexander Sukhov +1
We investigate theoretically the dynamic multiferroic response of coupled ferroelectric/ferromagnetic composites upon excitation by a photo-induced acoustic strain pulse. Two magne…
Magnon-driven longitudinal spin Seebeck effect in F|N and N|F|N structures: role of asymmetric in-plane magnetic anisotropy
L. Chotorlishvili, Z. Toklikishvili, S. R. Etesami +3
The influence of an asymmetric in-plane magnetic anisotropy on the thermally activated spin current is studied theoretically for two different systems; (i) the system consisting of…
Nonlinear magneto-optical response to light carrying orbital angular momentum
Thomas Bose, Jamal Berakdar
We predict a non-thermal magneto-optical effect for magnetic insulators subject to intense light carrying orbital angular momentum (OAM). Using a classical approach to second harmo…
Chargeless spin current for switching and coupling of domain walls in magnetic nanowires
Chenglong Jia, Jamal Berakdar
The demonstration of the generation and control of a pure spin current (without net charge flow) by electric fields and/or temperature gradient has been an essential leap in the qu…
Local Ionization Dynamics Traced by Photoassisted Scanning Tunneling Microscopy: A Theoretical Approach
M. Schueler, Y. Pavlyukh, J. Berakdar
For tracing the spatiotemporal evolution of electronic systems, we suggest and analyze theoretically a setup that exploits the excellent spatial resolution based on scanning tunnel…