Quantum Transport and Quantum Devices in Novel Structures

9801760张这是A.M.教授的建议普渡大学物理系的Chang描述了当代量子固体行为的两个基本领域的实验研究计划，即分数量子霍尔流体边缘的手性Luttinger液体的行为，以及量子混沌现象中的相互作用效应，以及对库仑封锁单电子晶体管（SET）技术发展的贡献。这项研究利用了先进的晶体生长和纳米光刻技术。由PI开发的切割边缘过度生长技术制造的器件在这项工作中发挥了重要作用。GaAs/AlxGa(1-x)As晶体将用于研究手性Luttinger液体异常的非费米液体隧穿特性。此外，相互作用对量子混沌的影响将在多用途纳米级多门量子点中进行研究。最后，该计划设想对传统平面上定义的SET设备和逻辑电路进行调查，以及对功能和优化的切割边缘几何形状。这是A.M.教授的建议普渡大学物理系的Chang描述了当代量子固体行为的两个基本领域的实验研究项目。由首席研究员开发的特殊晶体生长技术将用于生产适合本研究的晶体材料。这项工作将与at&t /朗讯实验室的科学家合作完成。这种合作所表达的学术界和工业界之间的协同作用是该计划的主要优势。研究结果将有助于澄清当代量子固体性质的许多问题，并将有助于改进技术设备的发展。＊＊＊

9801760 Chang This proposal by Prof. A.M. Chang of the Department of Physics of Purdue University describes an experimental research program in two fundamental areas of the behavior of contemporary quantum solids, namely the behavior of chiral Luttinger liquids at the edge of fractional quantum Hall fluids, and the interaction effects in the quantum chaos phenomenon, as well as contributions to the development of Coulomb Blockade Single Electron Transistor (SET) technology. This research utilizes advanced crystal growth and nanolithography techniques. Devices fabricated by the Cleaved-Edge-Overgrowth technique developed by the PI play a major role in this work. GaAs/AlxGa(1-x)As crystals will be used to investigate unusual non-Fermi liquid tunneling characteristics of chiral Luttinger liquids. Further, the effects of interaction on quantum chaos will be studied in versatile, nanoscale multi- gate quantum dots. Lastly, the program envisions an investigation of SET devices and logic circuitry lithographically defined on the conventional planar as well as cleaved-edge geometries for functionality and optimization. %%% This proposal by Prof. A.M. Chang of the Department of Physics of Purdue University describes an experimental research program in two fundamental areas of the behavior of contemporary quantum solids. Special crystal growth techniques developed by the principal investigator will be used to produce the crystal materials suitable for this research. This will be done in collaboration with staff scientists at the AT&T/Lucent laboratories. The synergism between academia and industry expressed by this collaboration is a major advantage of this program. The results of the research will serve to clarify many issues of the properties of contemporary quantum solids and will assist in the development of improved technological devices. ***