TY - JOUR
T1 - Ultrafast optical control of magnetization in EuO thin films
AU - Makino, T.
AU - Liu, F.
AU - Yamasaki, T.
AU - Kozuka, Y.
AU - Ueno, K.
AU - Tsukazaki, A.
AU - Fukumura, T.
AU - Kong, Y.
AU - Kawasaki, M.
PY - 2012/8/2
Y1 - 2012/8/2
N2 - All-optical pump-probe detection of magnetization precession has been performed for ferromagnetic EuO thin films at 10 K. We demonstrate that the circularly polarized light can be used to control the magnetization precession on an ultrafast time scale. This takes place within the 100-fs duration of a single laser pulse, through combined contribution from two nonthermal photomagnetic effects, i.e., enhancement of the magnetization and an inverse Faraday effect. From the magnetic field dependencies of the frequency and the Gilbert damping parameter, the intrinsic Gilbert damping coefficient is evaluated to be α 3 × 10 -3.
AB - All-optical pump-probe detection of magnetization precession has been performed for ferromagnetic EuO thin films at 10 K. We demonstrate that the circularly polarized light can be used to control the magnetization precession on an ultrafast time scale. This takes place within the 100-fs duration of a single laser pulse, through combined contribution from two nonthermal photomagnetic effects, i.e., enhancement of the magnetization and an inverse Faraday effect. From the magnetic field dependencies of the frequency and the Gilbert damping parameter, the intrinsic Gilbert damping coefficient is evaluated to be α 3 × 10 -3.
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U2 - 10.1103/PhysRevB.86.064403
DO - 10.1103/PhysRevB.86.064403
M3 - Article
AN - SCOPUS:84864972543
SN - 1098-0121
VL - 86
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 6
M1 - 064403
ER -