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Tuning anomalous Hall conductivity antiferromagnetic configurations in GdPtBi.
Phys Chem Chem Phys
January 2025
Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha No 10, Bandung 40132, Jawa Barat, Indonesia.
The magnetic, electronic, and topological properties of GdPtBi were systematically investigated using first-principles density functional theory (DFT) calculations. Various magnetic configurations were examined, including ferromagnetic (FM) and antiferromagnetic (AFM) states, with particular focus on AFM states where the Gd magnetic moments align either parallel (AFM) or perpendicular (AFM) to the [111] crystal direction. For AFM, the in-plane angles were varied at = 0°, 15°, and 30° (denoted as AFM, AFM, and AFM, respectively).
View Article and Find Full Text PDFTrajectory analysis of anomalous dynamics in optical lattice.
J Chem Phys
January 2025
School of Physics, Shandong University, Jinan 250100, China.
We apply the trajectory formulation to analyze the anomalous dynamics of cold atoms in an optical lattice. The phase space probability density function of cold atoms, their dynamics, and the mechanism of dynamic evolution from an initial Gaussian distribution to a power-law distribution are analyzed. The results of the trajectory formulation are in good agreement with the previously reported experimental results for the exponent of position variance for a long time and the position-momentum correlation.
View Article and Find Full Text PDFHigher precision constraints on the tau in LHC photon-initiated production: a full account of hadron dissociation and soft survival effects.
Eur Phys J C Part Fields
December 2024
Department of Physics and Astronomy, University College London, London, WC1E 6BT UK.
Article Synopsis
- This study is the first to calculate how photon-initiated pair production is affected by non-zero anomalous magnetic and electric dipole moments of leptons, considering their interplay with survival factors and potential dissociation of hadron beams.
- The authors found that the impact of these factors is generally minor (on the percent level) in current experimental analyses but will become more significant as measurement precision improves.
- To assist future research, the calculations have been integrated into the SuperChic Monte Carlo generator, allowing simulation of this process with adjustable parameters without additional reruns.
Infrared imaging of magnetic octupole domains in non-collinear antiferromagnets.
Natl Sci Rev
June 2024
International Center for Quantum Design of Functional Materials (ICQD), School of Emerging Technology, University of Science and Technology of China, Hefei 230026, China.
Article Synopsis
- The study highlights the importance of magnetic structure in antiferromagnets (AFMs), emphasizing their potential for digital data encoding and novel physical phenomena.
- Despite their significance, visualizing the domain structure of non-collinear AFMs remains challenging, with current methods limited to materials like MnSn.
- The researchers introduce a new imaging technique using the anomalous Ettingshausen effect (AEE) that allows for simultaneous observation of magnetic domains in various non-collinear AFMs, enhancing understanding of their magnetization processes.
Confined Magnetization at the Sublattice-Matched Ruthenium Oxide Heterointerface.
Small
November 2024
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.
Creating a heterostructure by combining two magnetically and structurally distinct ruthenium oxides is a crucial approach for investigating their emergent magnetic states and interactions. Previously, research has predominantly concentrated on the intrinsic properties of the ferromagnet SrRuO and recently discovered altermagnet RuO solely. Here, the study engineers an ultrasharp sublattice-matched heterointerface using pseudo-cubic SrRuO and rutile RuO, conducting an in-depth analysis of their spin interactions.
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