290 citations · 1.2k across the 42 of their papers we have counts for
43 papers
Geometry Dependent Localization of Surface Plasmons on Random Gold Nanoparticle Assemblies
Mohammed Fayis Kalady, Johannes Schultz, Kristina Weinel +2
Assemblies of plasmonic nanoparticles (NPs) support hybridized modes of localized surface plasmons (LSPs), which delocalize in geometrically well-ordered arrangements. Here, the hy…
Transport of Intensity Phase Retrieval in the Presence of Intensity Variations and Unknown Boundary Conditions
A. Lubk, R. Kyrychenko, D. Wolf +8
The so-called Transport of Intensity Equation (TIE) phase retrieval technique is widely applied in light, x-ray and electron optics to reconstruct, e.g., refractive indices, electr…
2024 Roadmap on Magnetic Microscopy Techniques and Their Applications in Materials Science
D. V. Christensen, U. Staub, T. R. Devidas +50
Considering the growing interest in magnetic materials for unconventional computing, data storage, and sensor applications, there is active research not only on material synthesis…
Revealing the impact of polystyrene-functionalization of Au octahedral nanocrystals of different sizes on formation and structure of mesocrystals
Dmitry Lapkin, Shweta Singh, Felizitas Kirner +11
The self-assembly of anisotropic nanocrystals (stabilized by organic capping molecules) with pre-selected composition, size, and shape allows for the creation of nanostructured mat…
Role of substrate clamping on anisotropy and domain structure in the canted antiferromagnet -FeO
Angela Wittmann, Olena Gomonay, Kai Litzius +19
Antiferromagnets have recently been propelled to the forefront of spintronics by their high potential for revolutionizing memory technologies. For this, understanding the formation…
Linear colossal magnetoresistance driven by magnetic textures in LaTiO3 thin films on SrTiO3
Teresa Tschirner, Berengar Leikert, Felix Kern +12
Linear magnetoresistance (LMR) is of particular interest for memory, electronics, and sensing applications, especially when it does not saturate over a wide range of magnetic field…
Electron Holographic Mapping of Structural and Electronic Reconstruction at Mono- and Bilayer Steps of h-BN
Subakti Subakti, Mohammadreza Daqiqshirazi, Daniel Wolf +7
Here, by making use of medium and high resolution autocorrected off-axis electron holography, we directly probe the electrostatic potential as well as in-plane and out-of-plane cha…
Dilution of the magnetic lattice in the Kitaev candidate -RuCl by Rh doping
G. Bastien, E. Vinokurova, M. Lange +8
Magnetic dilution of a well-established Kitaev candidate system is realized in the substitutional RuRhCl series (). Optimized syntheses protocols yiel…
Field tunable three-dimensional magnetic nanotextures in cobalt-nickel nanowires
I. M. Andersen, D. Wolf, L. A. Rodriguez +8
Cylindrical magnetic nanowires with large transversal magnetocrystalline anisotropy have been shown to sustain non-trivial magnetic configurations resulting from the interplay of s…
Maximal Anderson Localization and Suppression of Surface Plasmons in Two-Dimensional Random Au Networks
Johannes Schultz, Karl Hiekel, Pavel Potapov +4
Two-dimensional random metal networks possess unique electrical and optical properties, such as almost total optical transparency and low sheet resistance, which are closely relate…
Hard X-ray photoemission spectroscopy of LaVO/SrTiO: Band alignment and electronic reconstruction
M. Stübinger, J. Gabel, P. Scheiderer +13
The heterostructure consisting of the Mott insulator LaVO and the band insulator SrTiO is considered a promising candidate for future photovoltaic applications. Not only do…
Extraction of physically meaningful endmembers from STEM spectrum-images combining geometrical and statistical approaches
Pavel Potapov, Axel Lubk
This article addresses extraction of physically meaningful information from STEM EELS and EDX spectrum-images using methods of Multivariate Statistical Analysis. The problem is int…
Layered van der Waals topological metals of TaTMTe4 (TM = Ir, Rh, Ru) family
G. Shipunov, B. R. Piening, C. Wuttke +12
Layered van~der~Waals materials of the family TaTMTe (TM=Ir, Rh, Ru) are showing very interesting electronic properties. Here we report the synthesis, crystal growth and struct…
Tailoring Plasmonics of Au@Ag Nanoparticles by Silica Encapsulation
Johannes Schultz, Felizitas Kirner, Pavel Potapov +3
Hybrid metallic nanoparticles encapsulated in oxide shells are currently intensely studied for plasmonic applications in sensing, medicine, catalysis, and photovoltaics. Here, we i…
A Hamiltonian Mechanics Framework for Charge Particle Optics in Straight and Curved Systems
Felix Kern, Jonas Krehl, Arsha Thampi +1
Charged particle optics, the description of particle trajectories in the vicinity of some optical axis, describe the imaging properties of particle optics devices. Here, we present…
Structural Study of a Self-Assembled Gold Mesocrystal Grain by Coherent X-ray Diffraction Imaging
J. Carnis, F. Kirner, D. Lapkin +15
Mesocrystals are nanostructured materials consisting of individual nanocrystals having a preferred crystallographic orientation. On mesoscopic length scales, the properties of meso…
Unveiling the three-dimensional spin texture of skyrmion tubes
Daniel Wolf, Sebastian Schneider, Ulrich K. Rößler +6
Magnetic skyrmions are stable topological solitons with complex non-coplanar spin structures. Their nanoscopic size and the low electric currents required to initiate and control t…
Bridging nano-optics and condensed matter formalisms in a unified description of inelastic scattering of relativistic electron beams
Hugo Lourenço-Martins, Axel Lubk, Mathieu Kociak
In the last decades, the blossoming of experimental breakthroughs in the domain of electron energy loss spectroscopy (EELS) has triggered a variety of theoretical developments. Tho…
Autocorrected Off-axis Holography of 2D Materials
Felix Kern, Martin Linck, Daniel Wolf +7
The reduced dimensionality in two-dimensional materials leads a wealth of unusual properties, which are currently explored for both fundamental and applied sciences. In order to st…
Investigation of potassium-intercalated bulk MoS using transmission electron energy-loss spectroscopy
Carsten Habenicht, Axel Lubk, Roman Schuster +2
We have investigated the effect of potassium (K) intercalation on -MoS using transmission electron energy-loss spectroscopy. For K concentrations up to approximately 0.4, t…
The incommensurate magnet iron monophosphide FeP: Crystal growth and characterization
I. O. Chernyavskii, S. E. Nikitin, Y. A. Onykiienko +14
We report an optimized chemical vapor transport method, which allows growing FeP single crystals up to 500 mg in mass and 80 in volume. The high quality of the crystals ob…
Axion Mie Theory of Electron Energy Loss Spectroscopy in Topological Insulators
Johannes Schultz, Flavio S. Nogueira, Bernd Büchner +2
Electronic topological states of matter exhibit novel types of responses to electromagnetic fields. The response of strong topological insulators, for instance, is characterized by…
Magnetic Nanoparticle Chains in Gelatin Ferrogels: Bioinspiration from Magnetotactic Bacteria
Sebastian Sturm, Maria Siglreitmeier, Daniel Wolf +7
Inspired by chains of ferrimagnetic nanocrystals (NCs) in magnetotactic bacteria (MTB), the synthesis and detailed characterization of ferrimagnetic magnetite NC chain-like assembl…
Direct Observation of Plasmon Band Formation and Delocalization in Quasi-Infinite Nanoparticle Chains
Martin Mayer, Pavel L. Potapov, Darius Pohl +6
Chains of metallic nanoparticles sustain strongly confined surface plasmons with relatively low dielectric losses. To exploit these properties in applications,such as waveguides, t…