Femtosecond Spin Dynamics in Magnetic Semiconductor Quantum Structures

本文研究了由II-VI稀释磁性半导体（DMS）制成的量子结构中，降维和量子约束对基本磁和电子自旋动力学的影响。磁光光谱探测自旋相关现象，如载流子自旋翻转散射、自旋相关电子隧道和定位、磁极化子形成和自旋晶格弛豫过程。该项目结合了飞秒光学测量、集成DCSQUID技术和外延材料制造等最先进的技术，以获得量子磁系统动态行为的实时视图。

The effects of reduced dimensionality an quantum confinement on fundamental magnetic and electronic spin dynamics are being investigated in quantum structures fabricated from II-VI diluted magnetic semiconductors (DMS). Magneto-optical spectroscopy probes spin-dependent phenomena such as carrier spin-flip scattering, spin dependent electronic tunneling and localization, magnetic polaron formation, and spin-lattice relaxation processes. The program combines state-of-the-art techniques in femtosecond optical measurements, integrated DCSQUID technology and epitaxial materials fabrication to obtain a real-timed view of dynamical behavior in quantum magnetic systems.