Photoinduced precession of magnetization in ferromagnetic (Ga,Mn)As

被引：100

作者：

Hashimoto, Y. ^{[1
]}

Kobayashi, S. ^{[1
]}

Munekata, H. ^{[1
]}

机构：

[1] Tokyo Inst Technol, Imaging Sci & Engn Lab, Midori Ku, Yokohama, Kanagawa 2268502, Japan

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 06期

关键词：

GA1-XMNXAS; ANISOTROPY; GAMNAS; MN;

D O I：

10.1103/PhysRevLett.100.067202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Precession of magnetization induced by pulsed optical excitation is observed in a ferromagnetic semiconductor (Ga,Mn)As by time-resolved magneto-optical measurements. It appears as complicated oscillations of a polarization plane of linearly polarized probe pulses, but is reproduced by gyromagnetic theory incorporating an impulsive change in an effective magnetic field due to a change in the magnetic anisotropy. The shape of the impulse suggests a significant nonthermal contribution of photogenerated carriers to the change in anisotropy through spin-orbit interaction.

引用

收藏

页数：4

相关论文

共 22 条

[1] Magnetization manipulation in (Ga,Mn)As by subpicosecond optical excitation [J].

Astakhov, GV ;

Kimel, AV ;

Schott, GM ;

Tsvetkov, AA ;

Kirilyuk, A ;

Yakovlev, DR ;

Karczewski, G ;

Ossau, I ;

Schmidt, G ;

Molenkamp, LW ;

Rasing, T .

APPLIED PHYSICS LETTERS, 2005, 86 (15) :1-3

[2] Ultrafast light-induced magnetization dynamics of ferromagnetic semiconductors [J].

Chovan, J ;

Kavousanaki, EG ;

Perakis, IE .

PHYSICAL REVIEW LETTERS, 2006, 96 (05)

[3] Hole-mediated ferromagnetism in tetrahedrally coordinated semiconductors [J].

Dietl, T ;

Ohno, H ;

Matsukura, F .

PHYSICAL REVIEW B, 2001, 63 (19)

[4] Femtosecond photomagnetic switching of spins in ferrimagnetic garnet films [J].

Hansteen, F ;

Kimel, A ;

Kirilyuk, A ;

Rasing, T .

PHYSICAL REVIEW LETTERS, 2005, 95 (04)

[5] Magnetization reversal in GaMnAs layers studied by Kerr effect [J].

Hrabovsky, D ;

Vanelle, E ;

Fert, AR ;

Yee, DS ;

Redoules, JP ;

Sadowski, J ;

Kanski, J ;

Ilver, L .

APPLIED PHYSICS LETTERS, 2002, 81 (15) :2806-2808

[6] Observation of giant magnetic linear dichroism in (Ga,Mn)As [J].

Kimel, AV ;

Astakhov, GV ;

Kirilyuk, A ;

Schott, GM ;

Karczewski, G ;

Ossau, W ;

Schmidt, G ;

Molenkamp, LW ;

Rasing, T .

PHYSICAL REVIEW LETTERS, 2005, 94 (22)

[7] Observation of the spin-charge thermal isolation of ferromagnetic Ga0.94Mn0.06As by time-resolved magneto-optical measurements -: art. no. 193203 [J].

Kojima, E ;

Shimano, R ;

Hashimoto, Y ;

Katsumoto, S ;

Iye, Y ;

Kuwata-Gonokami, M .

PHYSICAL REVIEW B, 2003, 68 (19)

[8] Polar Kerr effect studies of Ga1-xMnxAs epitaxial films -: art. no. 024430 [J].

Lang, R ;

Winter, A ;

Pascher, H ;

Krenn, H ;

Liu, X ;

Furdyna, JK .

PHYSICAL REVIEW B, 2005, 72 (02)

[9] Ferromagnetic resonance in Ga1-xMnxAs:: Effects of magnetic anisotropy -: art. no. 205204 [J].

Liu, X ;

Sasaki, Y ;

Furdyna, JK .

PHYSICAL REVIEW B, 2003, 67 (20)

[10] Ferromagnetic resonance study of magnetization relaxation in GaMnAs [J].

Matsuda, YH ;

Oiwa, A ;

Tanaka, K ;

Munekata, H .

PHYSICA B-CONDENSED MATTER, 2006, 376 :668-671