Direct Far-Infrared and Magneto-Transport Studies of the Two Dimensional Electron Gas

点击翻译按钮获取中文摘要

This research program has the objective of achieving a deeper understanding of the magnetic and infrared properties of the technologically important two-dimensional electron gas (2DEG) in high quality, modulation-doped semiconductor heterojunctions. Experiments at low temperatures and high magnetic fields will be employed to probe the physics of the Fractional Quantum Hall Effect (FQHE). The far infrared (FIR) properties of the inter- subband transitions will be studied via prism coupling both with and without an external magnetic field. It is hoped to answer fundamental questions about the coupling between intersubband and cyclotron resonance transitions due to a parallel magnetic field. A second thrust involves magneto-transport studies of the many body nature of the unique FQHE effect and the effect of the parallel magnetic field component on the FQHE state. These detailed investigations will be compared with sophisticated theories of the FQHE.