H. Ebert
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View article: Transition from Optically Excited to Intrinsic Spin Polarization in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:msub> <mml:mrow> <mml:mi>WSe</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>2</mml:mn> </mml:mrow> </mml:msub> </mml:mrow> </mml:math>
Transition from Optically Excited to Intrinsic Spin Polarization in Open
Layered 2D van der Waals materials, such as transition metal dichalcogenides, are promising for nanoscale spintronic and optoelectronic applications. Harnessing their full potential requires understanding both intrinsic transport and the d…
Ultrafast spin dynamics: role of laser-induced modification of exchange parameters Open
Induced by an ultra-short laser pulse, the electronic structure of a material undergoes strong modifications leading to a fast demagnetization in magnetic materials. Induced spin-flip transitions are one of the reasons for demagnetization,…
Unraveling the Complexity of the Dzyaloshinskii–Moriya Interaction in Layered Magnets: The Full Magnitude and Chirality Control Open
Chirality is one of the inherent characteristics of some objects in nature. In magnetism, chiral magnetic textures can be formed in systems with broken inversion symmetry and due to an antisymmetric magnetic interaction, known as Dzyaloshi…
View article: Transition from Optically Excited to Intrinsic Spin Polarization in WSe$_2$
Transition from Optically Excited to Intrinsic Spin Polarization in WSe$_2$ Open
Layered 2D van der Waals materials, such as transition metal dichalcogenides, are promising for nanoscale spintronic and optoelectronic applications. Harnessing their full potential requires understanding both intrinsic transport and the d…
Defect Imide Double Antiperovskites <i>AE</i><sub>5</sub>As<i>Pn</i>(NH)<sub>2</sub> (<i>AE</i>=Ca, Sr; <i>Pn</i>=Sb, Bi) as Potential Solar Cell Absorber Materials Open
An abundance of oxide, halide and chalcogenide perovskites have been explored, demonstrating outstanding properties, while the emerging nitride perovskites are extremely rare due to their challenging synthesis requirements. By inverting th…
Defect Imide Double Antiperovskites <i>AE</i><sub>5</sub>As<i>Pn</i>(NH)<sub>2</sub> (<i>AE</i>=Ca, Sr; <i>Pn</i>=Sb, Bi) as Potential Solar Cell Absorber Materials Open
An abundance of oxide, halide and chalcogenide perovskites have been explored, demonstrating outstanding properties, while the emerging nitride perovskites are extremely rare due to their challenging synthesis requirements. By inverting th…
View article: Topological material in the III–V family: Heteroepitaxial InBi on InAs
Topological material in the III–V family: Heteroepitaxial InBi on InAs Open
InBi(001) is formed epitaxially on InAs(111)-A by depositing Bi onto an In-rich surface. Angle-resolved photoemission measurements reveal topological electronic surface states, close to the M¯ high symmetry point. This demonstrates a heter…
View article: Overcoming Intrinsic Quantum Confinement and Ultrafast Self-Trapping in Ag–Bi–I- and Cu–Bi–I-Based 2D Double Perovskites through Electroactive Cations
Overcoming Intrinsic Quantum Confinement and Ultrafast Self-Trapping in Ag–Bi–I- and Cu–Bi–I-Based 2D Double Perovskites through Electroactive Cations Open
The possibility to combine organic semiconducting materials with inorganic halide perovskites opens exciting pathways toward tuning optoelectronic properties. Exploring stable and nontoxic, double perovskites as a host for electroactive or…
View article: Signatures of magnetism control by flow of angular momentum
Signatures of magnetism control by flow of angular momentum Open
Exploring new strategies to manipulate the order parameter of magnetic materials by electrical means is of great importance not only for advancing our understanding of fundamental magnetism but also for unlocking potential applications. A …
Spin and orbital Hall effect in non-magnetic transition metals: extrinsic vs intrinsic contributions Open
Kubo's linear response formalism has been used to calculate the orbital Hall conductivity (OHC) for non-magnetic undoped and doped transition metal systems, focusing on the impact of different types of disorder and the role of vertex corre…
View article: Adapting Explainable Machine Learning to Study Mechanical Properties of 2D Hybrid Halide Perovskites
Adapting Explainable Machine Learning to Study Mechanical Properties of 2D Hybrid Halide Perovskites Open
2D hybrid organic and inorganic perovskites (HOIPs) are used as capping layers on top of 3D perovskites to enhance their stability while maintaining the desired power conversion efficiency (PCE). Therefore, the 2D HOIP needs to withstand m…
View article: Synthesis and in-depth structure determination of a novel metastable high-pressure CrTe<sub>3</sub> phase
Synthesis and in-depth structure determination of a novel metastable high-pressure CrTe<sub>3</sub> phase Open
This study reports the synthesis and crystal structure determination of a novel CrTe 3 phase using various experimental and theoretical methods. The average stoichiometry and local phase separation of this quenched high-pressure phase were…
Ultrafast spin dynamics: role of laser-induced modification of exchange parameters Open
Induced by an ultra-short laser pulse, the electronic structure of a material undergoes strong modifications leading to a fast demagnetization in magnetic materials. Induced spin-flip transitions are one of the reasons for demagnetization,…
Spin current control of magnetism Open
Exploring novel strategies to manipulate the order parameter of magnetic materials by electrical means is of great importance, not only for advancing our understanding of fundamental magnetism, but also for unlocking potential practical ap…
View article: Unveiling the physics of the spin-orbit coupling at the surface of a model topological insulator: from theory to experiments
Unveiling the physics of the spin-orbit coupling at the surface of a model topological insulator: from theory to experiments Open
Spin-orbit interaction affects the band structure of topological insulators beyond the opening of an inverted gap in the bulk bands, and the understanding of its effects on the surface states is of primary importance to access the underlyi…
Spin current control of magnetism Open
Exploring novel strategies to manipulate the order parameter of magnetic materials by electrical means is of great importance, not only for advancing our understanding of fundamental magnetism, but also for unlocking potential practical ap…
View article: Interplay between disorder and electronic correlations in compositionally complex alloys
Interplay between disorder and electronic correlations in compositionally complex alloys Open
Exploring the intricate interplay between disorder and correlations in compositionally complex alloys, our study employs resonant and valence band photoemission, optical conductivity, and electrical resistivity, complemented by density fun…
Unraveling the Complexity of the Dzyaloshinskii-Moriya Interaction in Layered Magnets: The Full Magnitude and Chirality Control Open
Chirality is an inherent characteristics of some objects in nature. In magnetism chiral magnetic textures can be formed in systems with broken inversion symmetry and due to an antisymmetric magnetic interaction, known as Dzyaloshinskii--Mo…
Discovery of multi-anion antiperovskites X6NFSn2 (X = Ca, Sr) as promising thermoelectric materials by computational screening Open
The thermoelectric performance of existing perovskites lags far behind that of state-of-the-art thermoelectric materials such as SnSe. Despite halide perovskites showing promising thermoelectric properties, namely, high Seebeck coefficient…
View article: Attosecond dynamics of photoemission over a wide photon energy range
Attosecond dynamics of photoemission over a wide photon energy range Open
Dynamics of photoemission from surfaces are usually studied at low photon energies (<100 eV). Here, we report on new findings on these dynamics observed at a tungsten surface on the attosecond time scale at photon energies exceeding 100 eV…
Chirality-inverted Dzyaloshinskii-Moriya interaction Open
The Dzyaloshinskii-Moriya interaction (DMI) is an antisymmetric exchange\ninteraction, which is responsible for the formation of topologically protected\nspin textures in chiral magnets. Here, by measuring the dispersion relation of\nthe D…
Room-temperature synthesis of lead-free copper(I)-antimony(III)-based double perovskite nanocrystals Open
In the field of perovskite solar cells, explorations of new lead-free all-inorganic perovskite materials are of great interest to address the instability and toxicity issues of lead-based hybrid perovskites. Recently, copper-antimony-based…
Calculating spin-lattice interactions in ferro- and antiferromagnets: the role of symmetry, dimension and frustration Open
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 and magnonic applications. Examples are ultrafast angular m…
Interfacial Tuning of Anisotropic Gilbert Damping Open
Tuning of the anisotropic Gilbert damping Δα has been realized in ultrathin single-crystalline Fe films grown on GaAs (001). A nonmonotonic dependence of Δα on film thickness t is observed upon varying t about 10 ML (∼1.4 nm). Δα increases…
Rotationally invariant formulation of spin-lattice coupling in multiscale modeling Open
In the spirit of multiscale modeling, we develop a theoretical framework for spin-lattice coupling that connects, on the one hand, to ab initio calculations of spin-lattice coupling parameters and, on the other hand, to the magnetoelastic …
Spin-lattice interaction parameters from first principles: theory and implementation Open
A scheme is presented to calculate on a first-principles level the spin-lattice coupling (SLC) parameters needed to perform combined molecular-spin dynamics (MSD) simulations. By treating changes to the spin configuration and atomic positi…
Chiral magnons in altermagnetic RuO2 Open
Magnons in ferromagnets have one chirality, and typically are in the GHz range and have a quadratic dispersion near the zero wavevector. In contrast, magnons in antiferromagnets are commonly considered to have bands with both chiralities t…
First-principles calculation of the parameters used by atomistic magnetic simulations Open
While the ground state of magnetic materials is in general well described on the basis of spin density functional theory (SDFT), the theoretical description of finite-temperature and non-equilibrium properties require an extension beyond t…
Angular Momentum Transfer via Relativistic Spin-Lattice Coupling from First Principles Open
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 system to the lattice on ultrashort time scales. In an att…