Results 31 to 40 of about 981,180 (299)

Electron-Driven Instabilities in the Solar Wind

Frontiers in Astronomy and Space Sciences, 2022
The electrons are an essential particle species in the solar wind. They often exhibit non-equilibrium features in their velocity distribution function.
Daniel Verscharen, B. D. G. Chandran, B. D. G. Chandran, E. Boella, E. Boella, J. Halekas, M. E. Innocenti, V. K. Jagarlamudi, V. K. Jagarlamudi, A. Micera, V. Pierrard, V. Pierrard, Š. Štverák, Š. Štverák, I. Y. Vasko, I. Y. Vasko, M. Velli, P. L. Whittlesey   +17 more
doaj   +1 more source

Electronic structure of MnSi: The role of electron-electron interactions

Physical Review B, 2006
We present an experimental study of the electronic structure of MnSi. Using x-ray absorption spectroscopy XAS, x-ray photoemission, and x-ray fluorescence, we provide experimental evidence that MnSi has a mixed valence ground state. We show that self-consistent local density approximation supercell calculations cannot replicate the XAS spectra of MnSi,
Carbone F, Zangrando M, Brinkman A, Nicolaou A, Bondino F, Magnano E, Nugroho AA, Parmigiani F, Jarlborg T, van der Marel D   +9 more
openaire   +5 more sources

Microelongated Thermo-Elastodiffusive Waves of Excited Semiconductor Material under Laser Pulses Impact

Mathematics, 2023
The current study focuses on one-dimensional (1D) deformation in an excited microelongated semiconductor medium impacted by optoelectronics with exponential laser-pulsed heat.
Ismail M. Tayel, Kh. Lotfy, Alaa A. El-Bary, Jawdat Alebraheem, Mogtaba A. Y. Mohammed   +4 more
doaj   +1 more source

Electrons in Glass [PDF]

Science, 1975
An outline is given of some of the steps which in the last ten years have led to an understanding of many of the properties of conduction and valence bands in non-crystalline materials. The concept of a mobility edge is described and some of the experimental evidence for its existence.
openaire   +7 more sources

Quantum Theory of Scattering of Nonclassical Fields by Free Electrons

Mathematics, 2023
At present, there is no non-perturbative theory of scattering of nonclassical electromagnetic waves by free electrons that describes the scattering process completely with the help of quantum physics.
Dmitry Makarov
doaj   +1 more source

Interaction vesicles as emerging mediators of host‐pathogen molecular crosstalk and their implications for infection dynamics

FEBS Letters, EarlyView.
Interaction extracellular vesicles (iEVs) are hybrid vesicles formed through host‐pathogen communication. They facilitate immune evasion, transfer pathogens' molecules, increase host cell uptake, and enhance virulence. This Perspective article illustrates the multifunctional roles of iEVs and highlights their emerging relevance in infection dynamics ...
Bruna Sabatke, Izadora Volpato Rossi, Marcel I. Ramirez   +2 more
wiley   +1 more source

TEM sample preparation of lithographically patterned permalloy nanostructures on silicon nitride membranes

Beilstein Journal of Nanotechnology
We have prepared ferromagnetic nanostructures intended for the investigation of high-frequency magnetization dynamics in permalloy (Py) nanodisks using Lorentz transmission electron microscopy (LTEM) and electron holography.
Joshua Williams, Michael I. Faley, Joseph Vimal Vas, Peng-Han Lu, Rafal E. Dunin-Borkowski   +4 more
doaj   +1 more source

In vivo evidence for glycyl radical insertion into a catalytically inactive variant of pyruvate formate‐lyase

FEBS Letters, EarlyView.
Dimeric pyruvate formate‐lyase cleaves pyruvate using a radical‐based mechanism. G734 serves as a radical storage location, and the radical is transferred to the catalytic C419 residue. Mutation of the C418‐C419 pair causes loss of enzyme activity, but does not impede radical introduction onto G734. Therefore, cis‐ but not trans‐radical transfer occurs
Michelle Kammel, A. F. Volker Wagner, R. Gary Sawers   +2 more
wiley   +1 more source

Geometric phase analysis of magnetic skyrmion lattices in Lorentz transmission electron microscopy images

Scientific Reports
Magnetic skyrmions are quasi-particles with a swirling spin texture that form two-dimensional lattices. Skyrmion lattices can exhibit defects in response to geometric constraints, variations of temperature or applied magnetic fields.
Thibaud Denneulin, András Kovács, Raluca Boltje, Nikolai S. Kiselev, Rafal E. Dunin-Borkowski   +4 more
doaj   +1 more source

Electron radiation belt dynamics during magnetic storms and in quiet time

Solar-Terrestrial Physics, 2018
The paper discusses the outer electron belt dynamics, adiabatic and nonadiabatic mechanisms of increases and losses of energetic electrons. Under undisturbed conditions, the outer electron belt gradually empties: in the inner magnetosphere due to ...
Lazutin L.L., Dmitriev A.V., Suvorova A.V.   +2 more
doaj   +1 more source