Results 201 to 210 of about 3,049,338 (225)

Spin-wave and spin-current dynamics in ultrafast demagnetization experiments

2014
Many facets of femtosecond excitation of ferromagnets have been investigated in the history of ultrafast demagnetization dynamics. Already the first model developed for nickel [1] in 1996 pointed out the importance of the three subsystems—electrons, spins and phonons—and the interaction within them.
openaire   +1 more source

Ultrafast Laser-Driven Asymmetric Demagnetization Dynamics in d -Wave Altermagnets

The Journal of Physical Chemistry Letters
Altermagnetism (AM), an unconventional spin-ordered phase, presents a unique platform for exploring ultrafast spin manipulation. However, the mechanisms underlying laser-driven spin dynamics in low-dimensional altermagnets remain largely unclear. Using real-time time-dependent density functional theory, we investigate laser-induced spin dynamics in d ...
Yiqi Huo, Luo Yan, Shuo Li, Liujiang Zhou   +3 more
openaire   +2 more sources

Modeling of the Laser-Heating Induced Ultrafast Demagnetization Dynamics in Ferrimagnetic Thin Films

IEEE Transactions on Magnetics, 2013
Ultrafast demagnetization excited by laser pulses introduces the technological possibility for controlling the magnetic properties of materials on sub-picosecond regime. In this paper, the demagnetization dynamics of amorphous ferrimagnetic TbFeCo alloy is modeled by using the stochastic Landau-Lifshitz-Gilbert equation on an atomistic level.
Xiankai Jiao, Yang Ren, Zongzhi Zhang, Qinyuan Jin, Yaowen Liu   +4 more
openaire   +1 more source

Experimental Distinction between Femtosecond Transient Demagnetization and Spin Current Dynamics in Metals

CLEO: 2015, 2015
Using terahertz emission spectroscopy we probe the elementary spin dynamics in ferromagnetic metal on a femtosecond timescale, and distinguish between the two major contributions — transient demagnetization and spin current by hot electrons.
Jin, Z., Arabski, J., Schmerber, G., Beaurepaire, E., Bonn, M., Turchinovich, D.   +5 more
openaire   +2 more sources

Ultrafast demagnetization dynamics in the presence of nanometer sized magnetic domains

2014
Experiments probing ultrafast demagnetization dynamics in the presence of a nanometer sized magnetic domain structure provide evidence that angular momentum transport by the excited spin polarized electrons may play an important role in those systems. These results are discussed also in regard of more refined follow-up X-ray based experiments.
openaire   +1 more source

Unraveling Ultrafast Demagnetization Dynamics in Nickel Film Using 3TM and m3TM Model

CLEO 2025
Ultrafast demagnetization dynamics in 10 nm Ni thin film is studied experimentally using TR-MOKE within 3TM and m3TM frameworks. Results reveal sub-picosecond quenching driven by spin-flip scattering, with substrate effects influencing femtosecond magnetization recovery processes.
Debkanta Ghosh, Chitra Dolai, Shailab S. Bodra, Biswajeet Nayak, Prasana K. Sahoo, Prasanta K. Datta   +5 more
openaire   +1 more source

Ultrafast demagnetization dynamics in the epitaxial FeGe(111) film chiral magnet

Physical Review B, 2023
Zizhao Gong, Wei Zhang, Jianan Liu, Zongkai Xie, Xu Yang, Jin Tang, Haifeng Du, Na Li, Xiangqun Zhang, Wei He, Zhao-hua Cheng   +10 more
openaire   +1 more source

Magnetic Field Analysis of Irreversible Demagnetization in Brushless DC Motor According to the Dynamic and Static Characteristic

IEEE Transactions on Magnetics, 2015
Jin Hur, Hyung-Kyu Kim
exaly   +2 more sources

A Period Energy Method for Demagnetization Detection in Surface Permanent Magnet Motors With Search Coils

Electronics, 2023
Wu Su, Wen Huang, Haitao Liu
exaly  

Demagnetization Effect on the Magnetoelectric Response of Composite Multiferroic Cylinders

Journal of Composites Science, 2021
George Youssef
exaly