Results 31 to 40 of about 1,236 (182)

Swept coded aperture real-time femtophotography [PDF]

Nature Communications
Single-shot real-time femtophotography is indispensable for imaging ultrafast dynamics during their times of occurrence. Despite their advantages over conventional multi-shot approaches, existing techniques confront restricted imaging speed or degraded ...
Jingdan Liu, Miguel Marquez, Yingming Lai, Heide Ibrahim, Katherine Légaré, Philippe Lassonde, Xianglei Liu, Michel Hehn, Stéphane Mangin, Grégory Malinowski, Zhengyan Li, François Légaré, Jinyang Liang   +12 more
doaj   +2 more sources

Magnetodynamics in exchange coupled composite magnets [PDF]

Scientific Reports
Tailoring magnetization using all-optical methods in exchange-coupled composite magnets holds significant scientific potential for advancing ultrafast magneto-optic devices.
Richa Bhardwaj, Antonio Caretta, Simone Laterza, Gabriele Coltrioli, Francesco Cautero, Amardeep Bharti, Kapil Dev, Pietro Parisse, Cinzia Di Giorgio, Subramanian Annapoorni, Asokan Kandasami, Marco Malvestuto   +11 more
doaj   +2 more sources

Ultrafast Demagnetization by Extreme Ultraviolet Light [PDF]

, 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
openaire   +3 more sources

First experiments with ultrashort, circularly polarized soft x-ray pulses at FLASH2 [PDF]

Structural Dynamics
Time-resolved absorption spectroscopy and magnetic circular dichroism with circularly polarized soft x-rays (XAS and XMCD) are powerful tools to probe electronic and magnetic dynamics in magnetic materials element- and site-selectively.
S. Marotzke, D. Gupta, R.-P. Wang, M. Pavelka, S. Dziarzhytski, C. von Korff Schmising, S. Jana, N. Thielemann-Kühn, T. Amrhein, M. Weinelt, I. Vaskivskyi, R. Knut, D. Engel, M. Braune, M. Ilchen, S. Savio, T. Otto, K. Tiedtke, V. Scheppe, J. Rönsch-Schulenberg, E. Schneidmiller, C. Schüßler-Langeheine, H. A. Dürr, M. Beye, G. Brenner, N. Pontius   +25 more
doaj   +2 more sources

Laser-induced terahertz spin transport in magnetic nanostructures arises from the same force as ultrafast demagnetization [PDF]

, 2022
<p><span>Data for the publication "Laser-induced terahertz spin transport in magnetic nanostructures arises from the same force as ultrafast demagnetization" published in PhysRevB (2022).
Rouzegar, Reza
core   +1 more source

Ultrafast demagnetization at high temperatures [PDF]

Journal of Physics: Condensed Matter, 2018
Abstract Time-resolved pump-probe measurements were made at variable heat accumulation in Co/Pd superlattices. Heat accumulation increases the baseline temperature and decreases the equilibrium magnetization. Transient ultrafast demagnetization first develops with higher fluence in parallel with strong equilibrium thermal spin ...
F Hoveyda, E Hohenstein, R Judge, S Smadici   +3 more
openaire   +3 more sources

Strong ultrafast demagnetization due to the intraband transitions

Journal of Physics: Condensed Matter, 2023
Abstract Demagnetization in ferromagnetic transition metals driven by a femtosecond laser pulse is a fundamental problem in solid state physics, and its understanding is essential to the development of spintronic devices. Ab initio calculation of time-dependent magnetic moment in the velocity gauge so far has not been successful in ...
Mitsuko Murakami, G P Zhang
openaire   +3 more sources

Lattice dynamics and ultrafast energy flow between electrons, spins, and phonons in a 3d ferromagnet

Physical Review Research, 2021
The ultrafast dynamics of magnetic order in a ferromagnet are governed by the interplay between electronic, magnetic, and lattice degrees of freedom. In order to obtain a microscopic understanding of ultrafast demagnetization, information on the response
Daniela Zahn, Florian Jakobs, Yoav William Windsor, Hélène Seiler, Thomas Vasileiadis, Tim A. Butcher, Yingpeng Qi, Dieter Engel, Unai Atxitia, Jan Vorberger, Ralph Ernstorfer   +10 more
doaj   +1 more source

Corrigendum: Indirect excitation of ultrafast demagnetization. [PDF]

Sci Rep, 2016
Vodungbo B, Tudu B, Perron J, Delaunay R, Müller L, Berntsen MH, Grübel G, Malinowski G, Weier C, Gautier J, Lambert G, Zeitoun P, Gutt C, Jal E, Reid AH, Granitzka PW, Jaouen N, Dakovski GL, Moeller S, Minitti MP, Mitra A, Carron S, Pfau B, von Korff Schmising C, Schneider M, Eisebitt S, Lüning J.   +26 more
europepmc   +2 more sources

Superdiffusive Spin Transport as a Mechanism of Ultrafast Demagnetization [PDF]

Physical Review Letters, 2010
We propose a semi-classical model for femtosecond-laser induced demagnetization due to spin-polarized excited electron diffusion in the super-diffusive regime. Our approach treats the finite elapsed time and transport in space between multiple electronic collisions exactly, as well as the presence of several metal films in the sample.
Battiato, Marco, Carva, Karel, Oppeneer, Peter M.   +2 more
openaire   +3 more sources