Results 101 to 110 of about 406 (125)

Role of electron-magnon scatterings in ultrafast demagnetization

Physical Review B, 2014
Possible contributions of electron-magnon scatterings for the ultrafast demagnetization after femtosecond laser irradiation of films of Ni and Fe are investigated by the ab initio spin-density-functional electron theory. The calculations are based on Fermi's golden rule for transition rates, and the nonequilibrium after the action of the laser pulse is
Haag, M., Illg, C., Fähnle, M.
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Terahertz emission spectroscopy of ultrafast demagnetization in iron

Optical Terahertz Science and Technology, 2005
We have observed ultrafast demagnetization of ferromagnetic metals after femtosecond pump pulse excitation by both transmission and emission spectroscopy. We observe demangtization occuring in iron with a 2 ps time constant.
David J. Hilton, Richard D. Averitt, Joe D. Thompson, Chad A. Meserole, David J. Funk, Greg L. Fisher, Antoinette J. Taylor   +6 more
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Ultrafast demagnetization in metallic ferromagnetic/antiferromagnetic heterostructures

2022
This thesis summarizes experimental work performed on thin-film metallic and magnetic systems by time-resolved soft X-ray reflectivity and magneto-optical Kerr effect measurements. The delay-time-dependent magnetization dynamics in Co, Mn, and Ni after laser excitation are investigated in layered systems.
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Ultrafast Element-Specific Demagnetization in Alloys

2020
The study of magnetism has long been an active area of interest for the scientific research, while also providing vast technological applications such as information storage. It was first observed in the middle of the 90s that irradiating a ferromagnetic material with an intense femtosecond laser pulse can result in a loss of magnetization occurring ...
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Ultrafast demagnetization in ferromagnetic iron

International Quantum Electronics Conference, 2005., 2005
D.J. Hilton, R.D. Averitt, C.A. Meserole, G.L. Fisher, D.J. Funk, A.J. Taylor   +5 more
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Ultrafast Demagnetization by Extreme Ultraviolet Light

2018
Free-electron lasers (FELs) enable the study of dynamics in matter on combined femtosecond time and nanometer length scales [1]. One of the most intriguing topics within contemporary research on magnetism, ultrafast near-infrared (IR) laser-induced demagnetization [2,3], has greatly benefited from the advent of FELs [4] as it was shown that optically ...
Philippi-Kobs, Andre, Berntsen, Magnus, Pedersoli, Emanuele, Manfredda, M, Kiskinova, Maya, Ziaja, Beata, Oepen, Hans Peter, Gruebel, Gerhard, Mueller, Leonard, Roseker, Wojciech, Riepp, Matthias, Bagschik, Kai, Wagner, Jochen, Froemter, Robert, Danilov, Mikhail, Capotondi, Flavio   +15 more
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Ultrafast demagnetization dynamics in the epitaxial FeGe(111) film chiral magnet

Physical Review B, 2023
Jin Tang, Xiangqun Zhang
exaly  

Ultrafast Dynamics of Demagnetization in FeMn/MnGa Bilayer Nanofilm Structures via Phonon Transport

Nanomaterials, 2022
Tianran Jiang, Xupeng Zhao, Zhifeng Chen   +2 more
exaly  

Element-resolved evidence of superdiffusive spin current arising from ultrafast demagnetization process

Physical Review B, 2023
Rahul Gupta, Francesco Cosco, Xin Chen   +2 more
exaly  

The enhanced ultrafast demagnetization at low temperature for MBE-grown Co2FeAl film on GaAs

Physica B: Condensed Matter, 2022
H L Wang, Xinhui Zhang
exaly