G. van der Laan
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View article: Structural and Magnetic Properties of Sputtered Chromium-Doped Sb2Te3 Thin Films
Structural and Magnetic Properties of Sputtered Chromium-Doped Sb2Te3 Thin Films Open
Magnetron sputtering offers a scalable route to magnetic topological insulators (MTIs) based on Cr-doped Sb2Te3. We combine a range of X-ray diffraction (XRD), reciprocal-space mapping (RSM), scanning transmission electron microscopy (STEM…
View article: Sputter‐Grown MnBi <sub>2</sub> Te <sub>4</sub> Thin Films: Magnetic Ground States and Phase Control
Sputter‐Grown MnBi <sub>2</sub> Te <sub>4</sub> Thin Films: Magnetic Ground States and Phase Control Open
The synthesis and magnetic properties of the intrinsic magnetic topological insulator MnBi 2 Te 4 , grown by magnetron sputtering, are investigated. While this growth method enables smoother morphologies than molecular beam epitaxy and is …
View article: Observation and Manipulation of Chiral Phasons in a Magnetic System
Observation and Manipulation of Chiral Phasons in a Magnetic System Open
Phasons, quasiparticle excitations corresponding to phase shifts in incommensurate orders, represent the lowest-energy Goldstone modes of such systems, yet have remained unobserved in magnetic materials. Here, we activate the Goldstone mod…
View article: Intrinsic Magnetism and Field‐Driven Spin Alignment in NiI <sub>2</sub> Revealed by X‐ray Magnetic Spectroscopy
Intrinsic Magnetism and Field‐Driven Spin Alignment in NiI <sub>2</sub> Revealed by X‐ray Magnetic Spectroscopy Open
This study investigates the intrinsic magnetism and field‐driven spin alignment in NiI 2 using X‐ray absorption spectroscopy and X‐ray magnetic circular dichroism (XMCD). NiI 2 , a van der Waals material, exhibits helimagnetic and type‐II …
View article: From ferromagnetic semiconductor to antiferromagnetic metal in epitaxial CrxTey monolayers
From ferromagnetic semiconductor to antiferromagnetic metal in epitaxial CrxTey monolayers Open
Chromium ditelluride, CrTe 2 , is an attractive candidate van der Waals material for hosting 2D magnetism. However, how the room-temperature ferromagnetism of the bulk evolves as the sample is thinned to the single-layer limit has proved c…
View article: Unusually High Occupation of Co 3d State in Magnetic Weyl Semimetal Co<sub>3</sub>Sn<sub>2</sub>S<sub>2</sub>
Unusually High Occupation of Co 3d State in Magnetic Weyl Semimetal Co<sub>3</sub>Sn<sub>2</sub>S<sub>2</sub> Open
The physical properties of magnetic topological materials are strongly influenced by their nontrivial band topology coupled with the magnetic structure. Co3Sn2S2 is a ferromagnetic kagome Weyl semimetal displaying giant intrinsic anomalous…
View article: Magnetic x-ray spectroscopy of Gd-doped EuO thin films
Magnetic x-ray spectroscopy of Gd-doped EuO thin films Open
We present a detailed x-ray magnetic circular dichroism (XMCD) study of the magnetic properties of Gd-doped EuO thin films, synthesized via molecular-beam epitaxy with Gd doping levels up to over 12%. The impact of Gd doping on the electro…
View article: Handle on the antiferromagnetic spin structure of NiO using a ferromagnetic adlayer
Handle on the antiferromagnetic spin structure of NiO using a ferromagnetic adlayer Open
Antiferromagnets (AFs) are characterized by spin structures that are resistant to external magnetic fields, rendering them ideal for persistent information storage but challenging to control. This study demonstrates that a thin ferromagnet…
View article: Synthesis of Nanocrystalline Mn-Doped Bi2Te3 Thin Films via Magnetron Sputtering
Synthesis of Nanocrystalline Mn-Doped Bi2Te3 Thin Films via Magnetron Sputtering Open
This study reports the structural and magnetic properties of Mn-doped Bi2Te3 thin films grown by magnetron sputtering. The films exhibit a ferromagnetic response that depends on the Mn doping concentration, as revealed by X-ray magnetic ci…
View article: Room-temperature in-plane ferromagnetism in Co-substituted Fe<sub>5</sub>GeTe<sub>2</sub> investigated by magnetic x-ray spectroscopy and microscopy
Room-temperature in-plane ferromagnetism in Co-substituted Fe<sub>5</sub>GeTe<sub>2</sub> investigated by magnetic x-ray spectroscopy and microscopy Open
The exploration of two-dimensional (2D) van der Waals ferromagnets has revealed intriguing magnetic properties with significant potential for spintronics applications. In this study, we examine the magnetic properties of Co-doped Fe 5 GeTe…
View article: Influence of an ultrathin Mn ‘spy layer’ on the static and dynamic magnetic coupling within FePt/NiFe bilayers
Influence of an ultrathin Mn ‘spy layer’ on the static and dynamic magnetic coupling within FePt/NiFe bilayers Open
We explore whether insertion of an ultrathin Mn ‘spy layer’ within a magnetic hard/soft bilayer can enable depth-sensitive element-specific measurements of the static and dynamic magnetization, while avoiding significant disruption of the …
View article: Slow Equilibrium Relaxation in a Chiral Magnet Mediated by Topological Defects
Slow Equilibrium Relaxation in a Chiral Magnet Mediated by Topological Defects Open
We performed a pump-probe experiment on the chiral magnet Cu$_2$OSeO$_3$ to study the relaxation dynamics of its non-collinear magnetic orders, employing a millisecond magnetic field pulse as the pump and resonant elastic x-ray scattering …
View article: Spin Dynamics Mode Locking between Helimagnetism and Ferromagnetism
Spin Dynamics Mode Locking between Helimagnetism and Ferromagnetism Open
Non-collinear spin textures, such as spin spirals and skyrmions, exhibit rich emergent physics in their spin dynamics. Nevertheless, the potential to exploit their distinctive spin resonance characteristics for on-chip microwave magnonic a…
View article: Rolling Motion of Rigid Skyrmion Crystallites Induced by Chiral Lattice Torque
Rolling Motion of Rigid Skyrmion Crystallites Induced by Chiral Lattice Torque Open
Magnetic skyrmions are topologically protected spin textures with emergent particle-like behaviors. Their dynamics under external stimuli is of great interest and importance for topological physics and spintronics applications alike. So fa…
View article: From ferromagnetic semiconductor to anti-ferromagnetic metal in epitaxial Cr$_x$Te$_y$ monolayers
From ferromagnetic semiconductor to anti-ferromagnetic metal in epitaxial Cr$_x$Te$_y$ monolayers Open
Chromium ditelluride, CrTe$_2$, is an attractive candidate van der Waals material for hosting 2D magnetism. However, how the room-temperature ferromagnetism of the bulk evolves as the sample is thinned to the single-layer limit has proved …
View article: Magnetization dynamics driven by displacement currents across a magnetic tunnel junction
Magnetization dynamics driven by displacement currents across a magnetic tunnel junction Open
Understanding the high-frequency transport characteristics of magnetic tunnel junctions (MTJs) is crucial for the development of fast-operating spintronics memories and radio frequency devices. Here, we present the study of a frequency-dep…
View article: Depth-dependent magnetic crossover in a room-temperature skyrmion-hosting multilayer
Depth-dependent magnetic crossover in a room-temperature skyrmion-hosting multilayer Open
Skyrmion-hosting multilayer stacks are promising avenues for applications, although little is known about the depth dependence of the magnetism. We address this by reporting the results of circular dichroic resonant elastic x-ray scatterin…
View article: Unidirectional multipulse helicity-independent all-optical switching in [Ni/Pt] based synthetic ferrimagnets
Unidirectional multipulse helicity-independent all-optical switching in [Ni/Pt] based synthetic ferrimagnets Open
Nickel-platinum-based synthetic ferrimagnets (SFi's) are highly tunable and rare-earth-free materials that allow ultrafast all optical control of magnetism to be explored. This study considers a SFi composed of a ferromagnetic [Ni/Pt] mult…
View article: Strain‐Modulated Ferromagnetism at an Intrinsic van der Waals Heterojunction
Strain‐Modulated Ferromagnetism at an Intrinsic van der Waals Heterojunction Open
The van der Waals interaction enables atomically thin layers of exfoliated 2D materials to be interfaced in heterostructures with relaxed epitaxy conditions, however, the ability to exfoliate and freely stack layers without any strain or s…
View article: Evidence of Temperature-Dependent Interplay between Spin and Orbital Moment in van der Waals Ferromagnet VI<sub>3</sub>
Evidence of Temperature-Dependent Interplay between Spin and Orbital Moment in van der Waals Ferromagnet VI<sub>3</sub> Open
van der Waals materials provide a versatile toolbox for the emergence of new quantum phenomena and fabrication of functional heterostructures. Among them, the trihalide VI3 stands out for its unique magnetic and structural landscape. Here …
View article: Templates for magnetic symmetry and altermagnetism in hexagonal MnTe
Templates for magnetic symmetry and altermagnetism in hexagonal MnTe Open
The symmetry of long-range magnetic order in manganese telluride (\ensuremath{\alpha}-MnTe) is unknown. Likewise, its standing as an altermagnet. To improve the situation, we present symmetry informed Bragg diffraction patterns based on a …
View article: Spin-orbit coupled spin-polarised hole gas at the CrSe2-terminated surface of AgCrSe2
Spin-orbit coupled spin-polarised hole gas at the CrSe2-terminated surface of AgCrSe2 Open
In half-metallic systems, electronic conduction is mediated by a single spin species, offering enormous potential for spintronic devices. Here, using microscopic-area angle-resolved photoemission, we show that a spin-polarised two-dimensio…
View article: Glancing-angle deposition of magnetic in-plane exchange springs
Glancing-angle deposition of magnetic in-plane exchange springs Open
Magnetic exchange springs (ESs) are composed of exchange-coupled hard and soft magnetic layers, i.e., layers with high and low anisotropy, respectively. The moments in the soft layer can be wound up by applying an external field, which has…
View article: Templates for magnetic symmetry and altermagnetism in hexagonal MnTe
Templates for magnetic symmetry and altermagnetism in hexagonal MnTe Open
The symmetry of long-range magnetic order in manganese telluride (alpha-MnTe) is unknown. Likewise, its standing as an altermagnet. To improve the situation, we present symmetry informed Bragg diffraction patterns based on a primary magnet…
View article: Evidence for in-plane spin-flop orientation at the MnPt/Fe(100) interface revealed by x-ray magnetic linear dichroism
Evidence for in-plane spin-flop orientation at the MnPt/Fe(100) interface revealed by x-ray magnetic linear dichroism Open
X-ray magnetic linear and circular dichroism at the Mn L2,3 edges are used to determine the magnetic properties of epitaxial MnPt films on Fe100. The good agreement between experimental linear dichroism and multiplet calculations reveals t…
View article: Anisotropic hybridization probed by polarization dependent x-ray absorption spectroscopy in VI<sub>3</sub> van der Waals Mott ferromagnet
Anisotropic hybridization probed by polarization dependent x-ray absorption spectroscopy in VI<sub>3</sub> van der Waals Mott ferromagnet Open
Polarization dependent x-ray absorption spectroscopy was used to study the magnetic ground state and the orbital occupation in bulk-phase VI 3 van der Waals crystals below and above the ferromagnetic and structural transitions. X-ray natur…
View article: Evolution of Emergent Monopoles into Magnetic Skyrmion Strings
Evolution of Emergent Monopoles into Magnetic Skyrmion Strings Open
Topological defects are fundamental concepts in physics, but little is known about the transition between distinct types across different dimensionalities. In topological magnetism, as in field theory, the transition between 1D strings and…
View article: Probing the Local Electronic Structure in Metal Halide Perovskites through Cobalt Substitution (Small Methods 6/2023)
Probing the Local Electronic Structure in Metal Halide Perovskites through Cobalt Substitution (Small Methods 6/2023) Open
Inside Front Cover In article number 2300095, Hesjedal and co-workers demonstrate that the substitution of Co2+ ions into the halide perovskite imparts magnetic behavior to the material while maintaining photovoltaic performance. We utiliz…