Optical Spectroscopy of Quantum-Confined Electrons at High Magnetic Fields and Low Temperatures

本提案描述了在国家磁铁实验室使用最高磁场和最低温度下的光学测量对受限电子系统的研究。这项研究涉及到与at&t贝尔实验室的晶体生长专家的合作。具有量子阱和其他受限几何形状的高质量GaAs结构将在69 T磁场和低至0.03 K的温度下进行研究。研究的现象包括维格纳晶体固体，分数量子霍尔效应，金属-绝缘体跃迁和耦合朗道-子带间能级的激发。这些材料将用非弹性光散射和发射光谱进行研究。

This proposal describes research on confined electron systems using optical measurements in the highest magnetic fields and lowest temperatures available at the National Magnet Lab. The research involves a collaboration with crystal growth experts at AT&T Bell Labs. High-quality GaAs structure with quantum wells and other confined geometries will be investigated in magnetic fields to 69 T and temperatures as low as 0.03 K. Phenomena being investigated include Wigner crystalline solids, the fractional quantum Hall effect, metal-insulator transition and excitations of coupled Landau-intersubband levels. The materials will be investigated with inelastic light scattering and emission spectroscopy.