It is found that spin relaxation lifetime of electrons lengthens with increasing excitation energy density for both samples, and the annealed (Ga,Mn)As has shorter carrier recombination and electron spin relaxation lifetimes as well as larger Kerr rotation angle than the as-grown (Ga,Mn).
运用飞秒时间分辨抽运-探测克尔光谱技术,研究了室温下退火及未退火(Ga,Mn)As的载流子自旋弛豫的激发能量密度依赖性,发现电子自旋弛豫时间随激发能量密度增加而增大,而在同一激发能量密度下,退火样品比未退火样品具有更短的载流子复合时间、电子自旋弛豫时间和更大的克尔转角,显示DP机理是室温下(Ga,Mn)As的电子自旋弛豫的主导机理。
A spin relaxation lifetime of 490±70 ps was obtained at room temperature.
获得初始自旋偏振度约为0·2,此结果支持在圆偏振光激发下,重、轻空穴带的跃迁强度比为3∶1,而不支持1∶1或1∶0·94的观点·同时获得自旋偏振弛豫时间为490±70ps,定性分析了自旋弛豫机理,认为BAP机理是电子自旋弛豫的主要机理。
Under non-resonant excitation, the spin relaxation lifetimes of 3.
实验发现,在非共振激发条件下,厚度为1/3单层的InAs亚单层中电子自旋弛豫寿命长达3。
In this paper,a brief review on spin relaxation in semiconductors is given.
本文对半导体中的自旋弛豫过程给出一个简要的回顾,介绍了半导体材料从体材料到量子阱、量子线、量子点不同维数的结构中各种自旋弛豫过程,主要关注了自旋去相位和相干控制。
A Study of Ultrafast All-optical Polarization Switch Based on Spin Relaxation in InGaAs/InP MQWs;
基于InGaAs/InP多量子阱中电子自旋弛豫的超快全光偏振开关的研究
Electron-and Hole-spin Relaxations in InAs/GaAs Single Quantum Dots
InAs/GaAs单量子点中电子/空穴自旋弛豫
Investigation of the Thermal Relaxation in IrMn-Based Spin Valve Multilayers
IrMn基自旋阀结构多层膜的热弛豫研究
Abnormal ferroelectric relaxation in the electron-irradiated copolymers of vinylidenefluoride and trifluoroethylene
电子辐照的P(VDF/TrFE)共聚物的铁电弛豫异常现象
Dielectric Relaxation Spectroscopy Study on NaA Zeolite in the Process of Ion Exchange
NaA沸石离子交换过程的介电弛豫谱研究
Dielectric Relaxation Behavior of Anionic Surfactant SDBS Micellar Solutions
阴离子表面活性剂SDBS胶束溶液的介电弛豫行为
First-principle theory on the relaxation configurations and electronic structures of Si(001) surface
Si(001)面弛豫表面构型与电子结构的第一性原理
Effect of electronic relaxation process on air breakdown caused by repetition frequency HPM
电子弛豫过程对重复频率高功率微波大气击穿的影响
Lineshape and Rotating-frame Longitudinal Relaxation of Intermolecular Multiple-Quantum Coherences, and its MRI Applications;
分子间多量子相干信号的线形理论、旋转坐标系纵向弛豫性质及其磁共振成像应用
Study on the Growth and Phase Transition of Relaxor Ferroelectric Single Crystals;
弛豫铁电单晶的生长及其相结构研究
Preparation and Characterization of PST-based Relaxor Ferroelectric Ceramics;
PST基弛豫铁电陶瓷的制备与性能研究
Dielectric Relaxation and Multiferroic Characteristics of BiFeO_3, YFeO_3 and YMnO_3-Based Ceramics
BiFeO_3、YFeO_3与YMnO_3基陶瓷的介电弛豫与多铁性
Numerical calculation of the electron-phonon coupling relaxation time in pulse laser ablation
脉冲激光烧蚀中电声弛豫时间的确定
The nuclei can relax to their normal distribution.
核子可以弛豫到它们正常分布状态。
Theoretical Studies on Dielectric Properties in Complex Perovskite-type Relaxor Ferroelectrics;
复合钙钛矿型弛豫铁电体介电性质的理论研究
Preparation and Dielectric Properties of Lead-based Relaxor Ferroelectric Ceramics;
铅系弛豫铁电陶瓷的制备和介电性能的研究
Investigation on Conductivity Relaxation of Cathode Materials Containing Cobalt;
含钴燃料电池阴极材料的电导弛豫研究
The Nonlinear Dielectric Response and Impurity Effect in Magnetic Relaxor Ferroelectrics
磁性弛豫铁电材料中掺杂及非线性介电响应