Publications
Showing 72 results for Author: Lisa M. Debeer-Schmitt
Aug, 2026
Journal
General Approach to Solving Spin Moiré Superstructures
Recently, a host of exciting magnetic textures such as topologically protected skyrmion lattices has been discovered in several bulk metallic lanthanide compounds. In addition to hosting skyrmion phases, a hallmark of this class of materials is the appearance of numerous spin textures characterized by superposition of multiple magnetic modulations: spin moiré superlattices…
Aug, 2026
Journal
Correlation between complex spin textures and the magnetocaloric and Hall effects in Eu(Ga1−𝑥Al𝑥)4 (𝑥=0.9, 1)
Determining the electronic phase diagram of a quantum material as a function of temperature (𝑇) and applied magnetic field (𝐻) forms the basis for understanding the microscopic origin of transport properties, such as the anomalous Hall effect (AHE) and topological Hall effect (THE). For many magnetic quantum materials, including EuAl4, a THE arises from a topologically pr…
Mar, 2026
Journal
Incommensurate Magnetism Drives Singular Angular Magnetoresistance in the Magnetic Weyl Semimetal CeAlGe
We demonstrate that a multi-𝐤 incommensurate magnetic state in the Weyl semimetal CeAlGe gives rise to a singular angular magnetoresistance (SAMR), which is an electrical transport signature capable of detecting magnetic field direction with exceptional precision. In contrast, its sister compound CeAlSi is devoid of both multi-𝐤 order and SAMR. We reveal that both phenomen…
Nov, 2025
Journal
Sample changers for direct geometry neutron chopper spectrometers
The advent of higher flux neutron sources has made the use of sample changers appropriate across the instrument suites at neutron scattering facilities. We examine the efficiency, design, and operation of two sample changers used at the thermal chopper spectrometers at the Spallation Neutron Source. We also present case studies of sample holders designed to accommodate mul…
Aug, 2025
Journal
Carbonation of Alkaline Earth Metal Hydroxides: Structure across Nano- to Mesoscales
The conversion of gaseous CO2 into a solid constitution through mineralization is an active area of carbon capture, and alkaline earth metal hydroxides (M(OH)2, M = Ca2+, Mg2+) are frontrunners in this area. As model systems, nanolime samples are excellent templates for the study of this reaction. Here, we have examined these under ambient pressure conditions with controll…
Jul, 2025
Journal
Porosity in nuclear graphite and its impact on nuclear reactor science and criticality safety applications
Porosity in nuclear-grade graphite significantly influences its low-energy neutron scattering, yet its effect on underlying phonon properties remains debated. This work integrates inelastic and small-angle neutron scattering (INS/SANS) experiments, advanced atomistic simulations with a novel machine-learned potential (DeepMD), total cross-section measurements, and neutroni…
May, 2025
Journal
Spin density wave and van Hove singularity in the kagome metal CeTi3Bi4
Kagome metals with van Hove singularities near the Fermi level can host intriguing quantum phenomena such as chiral loop currents, electronic nematicity, and unconventional superconductivity. However, to our best knowledge, unconventional magnetic states driven by van Hove singularities–like spin-density waves–have not been observed experimentally in kagome metals. Here, w…
Apr, 2025
Journal
Correlation between complex spin textures and the magnetocaloric and Hall effects in Eu(Ga1−𝑥Al𝑥)4 (𝑥=0.9, 1)
Determining the electronic phase diagram of a quantum material as a function of temperature (𝑇) and applied magnetic field (𝐻) forms the basis for understanding the microscopic origin of transport properties, such as the anomalous Hall effect (AHE) and topological Hall effect (THE). For many magnetic quantum materials, including EuAl4, a THE arises from a topologically pr…
Feb, 2025
Journal
Stimulating β-Series Precipitation in Mg–Nd Alloys Via Microalloying: A Comparison of Electron Microscopy and Small-Angle Scattering Techniques
The Mg–Nd alloy system is of particular interest in the development of high-strength, lightweight structural alloys due to the formation of strengthening metastable Mg–Nd β-series precipitates during heat treatment. The strengthening is primarily provided by a combination of the β‴ and β1 precipitation. It is therefore important to understand how the precipitation behavior…
Feb, 2025
Journal
Small-angle scattering interferometry with neutron orbital angular momentum states
Methods to prepare and characterize neutron helical waves carrying orbital angular momentum (OAM) were recently demonstrated at small-angle neutron scattering (SANS) facilities. These methods enable access to the neutron orbital degree of freedom which provides new avenues of exploration in fundamental science experiments as well as in material characterization application…