Results 81 to 90 of about 37,266 (256)

A unified topological classification of circular orbits for charged particles in black hole spacetimes

European Physical Journal C: Particles and Fields
The study of circular orbits offers profound insights into the structure of spacetime around black holes. While the topological properties of these orbits are well-established for neutral particles, the influence of electric charge–particularly for ...
Yong Song, Jia Li, Yiting Cen, Kai Diao, Xiaofeng Zhao, Shunping Shi   +5 more
doaj   +1 more source

Magnetotransport of Weyl semimetals with ℤ2 topological charge and chiral anomaly

Journal of High Energy Physics, 2019
We calculate the magnetoconductivity of the Weyl semimetal with ℤ2 topological charge and chiral anomaly utilizing the recently developed hydrodynamic theory.
Marek Rogatko, Karol I. Wysokinski
doaj   +1 more source

Optimal Control Drives Ultrafast and Energy‐Efficient Magnetization Switching in Van der Waals Magnets

Advanced Materials, EarlyView.
ABSTRACT The accelerating expansion of data‐centric technologies is sharply increasing the energy burden of information storage, placing unprecedented pressure on the efficiency of magnetic switching. Conventional field‐driven reversal, once the foundation of magnetic memory, has become impractical in modern architectures due to its high energy cost ...
Mohammad H. Badarneh, PeiYu Cai, Elton J. G. Santos   +2 more
wiley   +1 more source

Organic Materials of Tomorrow: Horizons of Artificial Intelligence

Advanced Materials, EarlyView.
This review examines machine learning techniques accelerating the discovery of organic semiconductors by linking molecular structure to properties. Key methods include graph neural networks, generative models, and active learning. Applications to organic photovoltaics demonstrate practical impact.
Harold Mena, J. Terence Blaskovits, Kun‐Han Lin, Denis Andrienko   +3 more
wiley   +1 more source

Effectively Identifying the Topological Charge and Polarization Order of Arbitrary Singular Light Beams Based on Orthogonal Polarization Separating

IEEE Photonics Journal, 2019
Singular beams with spatially variant field distributions have various fantastic applications. However, one of the significant challenges that hinder the wide application of singular beams is how to effectively identify the topological charge and the ...
Yanliang He, Huapeng Ye, Junmin Liu, Zhiqiang Xie, Peipei Wang, Bo Yang, Xinxing Zhou, Yanxia Gao, Shuqing Chen, Ying Li, Dianyuan Fan   +10 more
doaj   +1 more source

Measuring the Hall Effect in Hysteretic Materials

Advanced Materials, EarlyView.
The authors highlight common pitfalls in measuring the Hall effect: in hysteretic magnets, improper data processing can create signals that look exotic but are not real. This Perspective explains the origin of these artifacts and presents practical measurement strategies that help researchers identify reliable Hall responses in complex magnetic ...
Jaime M. Moya, Anthony Voyemant, Sudipta Chatterjee, Scott B. Lee, Grigorii Skorupskii, Connor J. Pollak, Leslie M. Schoop   +6 more
wiley   +1 more source

Observation of a Higher‐Order End Topological Insulator in a Real Projective Lattice

Advanced Science
The modern theory of quantized polarization has recently extended from 1D dipole moment to multipole moment, leading to the development from conventional topological insulators (TIs) to higher‐order TIs, i.e., from the bulk polarization as primary ...
Ce Shang, Shuo Liu, Caigui Jiang, Ruiwen Shao, Xiaoning Zang, Ching Hua Lee, Ronny Thomale, Aurélien Manchon, Tie Jun Cui, Udo Schwingenschlögl   +9 more
doaj   +1 more source

Observation of Fractional Disclination Charges Induced by Gain and Loss

Electromagnetic Science
Fractional charge, a hallmark of modern electric polarization theory, provides a topological framework for understanding quantized polarization. It has only recently been recognized that real-space topological defects, such as disclinations, can further ...
Ruifeng Li, Rimi Banerjee, Subhaskar Mandal, Da Li, Yang Long, Tianchi Ma, Jian-Wei Liu, Gui-Geng Liu, Yidong Chong, Baile Zhang, Er-Ping Li   +10 more
doaj   +1 more source

Decomposition of strongly charged topological defects

Physical Review E, 2017
We study decomposition of geometrically enforced nematic topological defects bearing relatively large defect strengths m in effectively two-dimensional planar systems. Theoretically, defect cores are analyzed within the mesoscopic Landau-de Gennes approach in terms of the tensor nematic order parameter.
Samo, Kralj, Bryce S, Murray, Charles, Rosenblatt   +2 more
openaire   +3 more sources

Why Is the Mechanism Underlying the Chiral‐Induced Selectivity Effect Still Challenging?

Advanced Materials, EarlyView.
The chiral‐induced spin selectivity (CISS) effect is observed in many experimental configurations and for different materials. However, there are theoretical challenges in attempting to explain those results. A qualitative framework for explaining all the results is presented.
Ron Naaman, Yossi Paltiel
wiley   +1 more source