Title :
Saturation of the ultrafast laser-induced demagnetization in nickel
Author :
Cheskis, D. ; Porat, A. ; Szapiro, L. ; Potashnik, O. ; Bar-Ad, S.
Author_Institution :
Sch. of Phys. & Astron., Tel Aviv Univ., Israel
Abstract :
We show saturation of the sub-picosecond demagnetization in nickel at high excitation densities, conclude that spin relaxation is incomplete, and associate the demagnetization with collapse of the Stoner gap due to band filling effects.
Keywords :
demagnetisation; high-speed optical techniques; laser beam effects; magneto-optical effects; nickel; Ni; Stoner gap; band filling effect; high excitation density; spin relaxation; sub-picosecond demagnetization; ultrafast laser-induced demagnetization; Demagnetization; Laser beams; Laser excitation; Magnetization; Magnetooptic effects; Nickel; Optical pulses; Polarization; Probes; Ultrafast optics;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2005. QELS '05
Print_ISBN :
1-55752-796-2
DOI :
10.1109/QELS.2005.1548917
