Results 101 to 110 of about 1,236 (182)

Ultrafast entropy production in pump-probe experiments

Nature Communications
The ultrafast control of materials has opened the possibility to investigate non-equilibrium states of matter with striking properties, such as transient superconductivity and ferroelectricity, ultrafast magnetization and demagnetization, as well as ...
Lorenzo Caprini, Hartmut Löwen, R. Matthias Geilhufe   +2 more
doaj   +1 more source

Laser induced ultrafast demagnetization in diluted magnetic semiconductor nanostructures [PDF]

, 2009
International audienceWe present a dynamical model that reproduces the observed time evolution of the magnetization in diluted magnetic semiconductor films after weak laser excitation.
Morandi, Omar, G. Manfredi, O. Morandi, Hervieux, Paul-Antoine, P.-A. Hervieux, Manfredi, Giovanni   +5 more
core   +1 more source

Fluence and Temperature Dependences of Laser-Induced Ultrafast Demagnetization and Recovery Dynamics in L1₀-FePt Thin Film. [PDF]

Materials (Basel), 2023
Xie Z, Cai Y, Tang M, Zhou J, Liu J, Peng J, Jiang T, Shi Z, Chen Z.   +8 more
europepmc   +1 more source

Ultrafast demagnetization: An electronic point of view

, 2014
ISBN:978-3-033-04583 ...
openaire   +2 more sources

Hot-Electron-Induced Ultrafast Demagnetization in Co / Pt Multilayers [PDF]

, 2016
International audienceUsing specially engineered structures to tailor the optical absorption in a metallic multilayer, we analyze the magnetization dynamics of a Co=Pt multilayer buried below a thick Cu layer.
Mangin, Stéphane, Montaigne, F., Koopmans, B., Mangin, S., Malinowski, G., Lalieu, M. L. M., Hehn, M., Lengaigne, G., Bergeard, N.   +8 more
core   +1 more source

Study of the role of interfaces in ultrafast demagnetization

, 2022
The models explaining the ultrafast quenching of magnetization following femtosecond optical excitationcan be classified into two broad categories relying either on a local or a non-local transfer of angular momentum. In this PhD, I demonstrate how the soft X-ray magnetic reflectivity in a pump-probe geometry is sensitive to local and non-local ...
openaire   +1 more source

Optical generation of intense ultrashort magnetic pulses at the nanoscale [PDF]

, 2013
Generating, controlling and sensing strong magnetic fields at ever shorter time and length scales is important for both fundamental solid-state physics and technological applications such as magnetic data recording.
Javier García de Abajo, F., Papasimakis, Nikitas, García de Abajo, F.Javier, Luk'yanchuk, Boris, Tsiatmas, Anagnostis, Atmatzakis, Evangelos, Fedotov, Vassili, Zheludev, Nikolay I.   +7 more
core   +1 more source

Ultrafast Local Magnetization and Demagnetization in Heusler Alloys

, 2016
With the goal of pushing Spintronic devices towards faster and faster timescales, we demonstrate, using ab-intio time-dependent density functional theory simulations of bulk Heusler compounds subject to ultrashort intense laser pulses, that the local magnetic moment can increase or decrease in a few femtoseconds.
Elliott, P., Müller, T., Dewhurst, J. K., Sharma, S., Gross, E. K. U.   +4 more
openaire   +2 more sources

Time resolved magneto-optical measurements of ultrafast demagnetization dynamics [PDF]

, 2013
In 1996 a paper by Beaurepaire et al. [PRL, 1996] reported on an ultrafast magneto-optic investigation on Nickel. It showed an ultrafast reduction of magnetization within the first picoseconds and a subsequent recovery on a slower time scale.
GIOVANNELLA, MARTINA
core  

Ultrafast demagnetization in buried Co80Dy20 as fingerprint of hot-electron transport [PDF]

The generation of ultrashort hot-electron pulses in metallic heterostructures offers attractive perspectives for the ultrafast spin manipulation on the picosecond time scale.
Bergeard, N. (Nicolas), Guyader, L. Le, Terrier, E. (Erwan), Ferté, T. (Tom), Malinowski, G., Holldack, K., Hehn, M., Boeglin, C. (Christine)   +7 more
core   +1 more source