Light-induced magnetic precession in (Ga,Mn)As slabs: Hybrid standing-wave Damon-Eshbach modes

D. M. Wang; Y. H. Ren; X. Liu; J. K. Furdyna; M. Grimsditch; R. Merlin

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Light-induced magnetic precession in (Ga,Mn)As slabs: Hybrid standing-wave Damon-Eshbach modes

机译：（Ga，Mn）As平板中的光致磁旋进：混合驻波Damon-Eshbach模式

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Coherent oscillations associated with spin precessions were observed in ultrafast optical experiments on ferromagnetic (Ga,Mn)As films. Using a complete theoretical description of the processes by which light couples to the magnetization, values for the anisotropy constants and the spin stiffness were unambiguously determined from the data. Estimates for the hole-Mn exchange coupling are significantly larger than those previously reported. Results also reveal an important negative contribution to the energy due to surface anisotropy leading to excitations that are a mixture of bulk waves and surface modes.

机译：在铁磁（Ga，Mn）As薄膜的超快光学实验中观察到与自旋旋进相关的相干振荡。通过对光耦合到磁化过程的完整理论描述，可以从数据中明确确定各向异性常数和自旋刚度的值。空穴-锰交换耦合的估计比以前报道的要大得多。结果还表明，由于表面各向异性导致能量的重要负贡献，这导致了体波和表面模式的混合。

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来源
《Physical review》 |2007年第23期|233308.1-233308.4|共4页
作者
D. M. Wang; Y. H. Ren; X. Liu; J. K. Furdyna; M. Grimsditch; R. Merlin;
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作者单位

FOCUS Center and Department of Physics, The University of Michigan, Ann Arbor, Michigan 48109-1040, USA;

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正文语种 eng
中图分类固体物理学;
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magnetic semiconductors; ferromagnetic; antiferromagnetic; and ferrimagnetic resonances; spin-wave resonance; magnetooptical effects; time-resolved optical spectroscopies and other ultrafast optical measurements in condensed matter;

机译：磁性半导体铁磁;反铁磁和亚铁磁共振;自旋波共振磁光效应;时间分辨光谱学和其他超快速光学测量;

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1. Light-induced precession of ferromagnetically coupled Mn spins in ferromagnetic (Ga,Mn)As [J] . H. Takechi, A. Oiwa, K. Nomura, Physica status solidi . 2006,第12期

机译：铁磁（Ga，Mn）As中铁磁耦合Mn自旋的光诱导进动
2. Light-induced precession of ferromagnetically coupled Mn spins in ferromagnetic (Ga,Mn)As [J] . H. Takechi, A. Oiwa, K. Nomura, Physica Status Solidi. C, Conferences and critical reviews . 2006,第12期

机译：铁磁（Ga，Mn）As中铁磁耦合Mn自旋的光诱导进动
3. Light-Induced Precession of Magnetization in Ferromagnetic Semiconductor (Ga,Mn)As [J] . N. Tesarova, P. Nemec, E. Rozkotova, Acta Physica Polonica . 2010,第5期

机译：铁磁半导体（Ga，Mn）As中光诱导的磁化进动
4. Ultrafast optical modification of magnetic anisotropy and stimulated precession in an epitaxial Co_2MnAl thin film [C] . Y. Liu, L. R. Shelford, V. V. Kruglyak Joint MMM-Intermag Conference . 2007

机译：外延Co_2mnal薄膜中磁各向异性和刺激预测的超快光学改性
5. Theoretical investigation of hard x-ray standing-wave photoelectron spectroscopy for magnetic multilayer studies. [D] . Heller, Nicholas Walter Medicus. 2009

机译：用于磁性多层研究的硬X射线驻波光电子能谱的理论研究。
6. Acceleration of the precession frequency for optically-oriented electron spins in ferromagnetic/semiconductor hybrids [O] . F. C. D. Moraes, S. Ullah, M. A. G. Balanta, -1

机译：铁磁/半导体混合体中光学取向电子自旋的进动频率加速
7. Light-Induced Magnetic Precession in (Ga,Mn)As Slabs: Hybrid Standing-Wave Damon-Eshbach Modes [O] . Wang, D. M., Ren, Y. H., Liu, X., 2006

机译：（Ga，mn）as平板中的光诱导磁性进动：杂化驻波Damon-Eshbach模式
8. Design of a high-gain laser diode-array pumped Nd:YAG Alternating Precessive Slab Amplifier (APS-Amplifier) [R] . Coyle, D. Barry 1991

机译：设计高增益激光二极管阵列泵浦Nd：YaG交替进动平板放大器（aps放大器）

Light-induced magnetic precession in (Ga,Mn)As slabs: Hybrid standing-wave Damon-Eshbach modes

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