Results 21 to 30 of about 1,137 (158)

Topological Spin‐Texture Transitions in van der Waals Magnets Revealed by X‐Ray Fourier Transform Holography

Advanced Materials, EarlyView.
Applied here for the first time to a 2D material, high‐resolution synchrotron x‐ray Fourier transform holography directly images topological spin textures in Fe3GeTe2. Combined with atomistic tight‐binding simulations including itinerant electrons and Rashba spin‐orbit coupling, the approach reveals labyrinth, skyrmion, and mixed phases, and uncovers ...
Sourav Chowdhury, Soumyaranjan Dash, Michael Schneider, Christopher Klose, Chithra H. Sharma, Lisa‐Marie Kern, Tim A. Butcher, Josefin Fuchs, Santanu Pakhira, Samik DuttaGupta, Takashi Taniguchi, Kenji Watanabe, Sujit Das, Sanjeev Kumar, Bastian Pfau, Amir‐Abbas Haghighirad, Moritz Hoesch   +16 more
wiley   +1 more source

Spectrally Programmable Spin‐Polarized Photocurrents in WSe2–NiPS3 Magnetic van der Waals Heterostructures

Advanced Materials, EarlyView.
Heterostructure photodiode devices of p‐type WSe2 with n‐type NiPS3 constructs spectrally protected spin‐polarized photocurrents. The energy of the excitation photon serves as an independent control parameter for spin‐selective photocurrent generation. ABSTRACT Efficient generation and control of spin‐polarized currents in semiconductors remain central
Rajesh Kumar Yadav, Michal Poplinger, Adi Levi, Adi Harchol, Nirman Chakraborty, Thomas Brumme, Thomas Heine, Efrat Lifshitz, Doron Naveh   +8 more
wiley   +1 more source

Relativistic Electron Acceleration and the “Ankle” Spectral Feature in Earth’s Magnetotail Reconnection

The Astrophysical Journal Letters
Electrons are accelerated to high, nonthermal energies during explosive energy-release events in space, such as magnetic reconnection. However, the properties and acceleration mechanisms of relativistic electrons directly associated with the reconnection
Weijie Sun, Mitsuo Oka, Marit Øieroset, Drew L. Turner, Tai Phan, Ian J. Cohen, Xiaocan Li, Jia Huang, Andy W. Smith, James A. Slavin, Gangkai Poh, Kevin J. Genestreti, Dan Gershman, Kyunghwan Dokgo, Guan Le, Rumi Nakamura, James L. Burch   +16 more
doaj   +1 more source

Extreme Relativistic Electron Fluxes in GPS Orbit: Analysis of NS41 BDD‐IIR Data

Space Weather, 2023
Relativistic electrons in the Earth's outer radiation belt are a significant space weather hazard. Satellites in GPS‐type orbits pass through the heart of the outer radiation belt where they may be exposed to large fluxes of relativistic electrons.
Nigel P. Meredith, Thomas E. Cayton, Michael D. Cayton, Richard B. Horne   +3 more
doaj   +1 more source

Eutectic Gallium‐Indium as a Potential Non‐Toxic Replacement in Mercury Intrusion Porosimetry

Advanced Materials Technologies, EarlyView.
A practical alternative to mercury intrusion porosimetry is presented using non‐oxidized eutectic gallium‐indium. An eGaIn Filling Station enables oxygen‐free preparation of standard penetrometers, and the resulting measurements faithfully reproduce pore‐size distributions and intrusion volumes measured with mercury across several standard reference ...
Denis Schuetz, Michael F. Noisternig, Manuel Brandstaetter, Valentin Seyfried, Norbert Reitinger, Bernhard Nell, Alexander Kasper, Riaz Ahmad, Martin Thomas   +8 more
wiley   +1 more source

Energy spectra of near-relativistic and relativistic electrons

Astronomy & Astrophysics
Context. Accurate measurements of the energy spectra of solar energetic particle events are essential for understanding the processes involved in particle acceleration and transport.
Jensen S., Heber B., Hörlöck M., Kollhoff A., Kühl P., Sierks H., Thoma A.   +6 more
doaj   +1 more source

Sliding Ferroelectricity Driven Spin‐Layertronics in Altermagnetic Multilayers

Advanced Science, EarlyView.
Integrating sliding ferroelectricity with altermagnetism enables nonvolatile electrical control of spin and layer degrees of freedom. In bilayer CuF2, interlayer translation reverses layer‐locked spin‐split bands, establishing a multifunctional “spin‐layertronic” platform.
Rui Peng, Guangxu Su, Yangyang Fan, Jiaan Li, Fanxin Liu, Yee Sin Ang   +5 more
wiley   +1 more source

Three-step Acceleration of the Radiation Belt Relativistic Electrons by Interplanetary Shocks

The Astrophysical Journal Supplement Series
Inward radial diffusion driven by ultra-low-frequency (ULF) waves is one of the dominant acceleration mechanisms of relativistic (>1.0 MeV) electrons in the Earth’s outer radiation belt.
Chaoling Tang, Xinxin Chu, Zhenpeng Su, Jingrun Chen   +3 more
doaj   +1 more source

A project to measure quantum spin correlations of relativistic electron pairs in Møller scattering

EPJ Web of Conferences, 2017
A project to measure quantum spin correlations for relativistic particles with mass is presented. It aims at testing spin observables in relativistic quantum mechanics.
Ciborowski Jacek, Caban Paweł, Drągowski Michał, Enders Joachim, Fritzsche Yuliya, Poliszczuk Artem, Rembieliński Jakub, Włodarczyk Marta   +7 more
doaj   +1 more source

Polarization Dynamics in Ferroelectrics: Insights Enabled by Machine Learning Molecular Dynamics

Advanced Science, EarlyView.
Machine learning molecular dynamics is presented as a route to capture polarization switching, domain wall kinetics, topological polar textures, and polar mechanical coupling beyond the limits of conventional atomistic methods. This Perspective surveys recent progress and identifies key methodological directions, including long‐range electrostatics ...
Dongyu Bai, Ri He, Junxian Liu, Liangzhi Kou   +3 more
wiley   +1 more source