Phonon Emission From a Hot Two-Dimensional Electron Gas

热二维电子气的声子发射这个奖项是根据1987/1988年美国-工业化国家科学家和工程师交流计划竞赛提出的。该计划旨在使美国科学家和工程师能够在西欧工业化国家以及日本、澳大利亚和新西兰的研究机构进行长期研究。交流奖为开展联合研究和利用外国独特或互补的设施、专门知识和实验条件提供了机会。奖项的评选依据是与其所在科学领域有关的科学标准、申请者未来的专业发展潜力以及与进一步促进科学和工程领域的国际合作有关的标准。该计划特别针对正在开始他们的研究生涯的科学家和工程师。这项研究项目解决了半导体器件中包含的热二维电子气在低温下发射声子的性质的测量问题。在这些条件下，主要的能量损失是声学声子发射。这项研究之所以令人感兴趣，是因为这些设备中更高的电子迁移率应该会导致明确定义的回旋频率，并提供一个机会来检查与声子波矢量截止相关的效应。该项目由美国科罗拉多矿业学院物理系詹姆斯·M·马德森博士和英国诺丁汉大学物理系L.J.查利斯教授领导。这项奖励建议提供资金，酌情支付国际旅行、当地出国旅行、津贴、家属津贴(如果适用)、语言培训(如果需要)和250美元的固定行政津贴或美国本土机构。

Phonon Emission From a Hot Two-Dimensional Electron Gas This award recommendation is made under the U.S.-Industrialized Countries Program for the Exchange of Scientists and Engineers, 1987/1988 Competition. The program is designed to enable U.S. scientists and engineers to conduct long-term research at research institutions in the industrialized countries of Western Europe as well as Japan, Australia, and New Zealand. Exchange awards provide opportunities for the conduct of joint research and the utilization of unique or complementary facilities, expertise and experimental conditions in foreign countries. Awards are selected on the basis of scientific criteria relevant to his/her field of science, the prospective potential of the applicants for professional growth, as well as criteria relevant to the furthering of international cooperation in science and engineering. The program is particularly directed to scientists and engineers who are embarking on their research careers. This research project addresses questions of the measurements on the nature of the phonons emitted from a hot two-dimensional electron gas contained in semiconductor devices at low temperatures. Under these conditions, the principal energy loss is by acoustic phonon emission. The research is of interest because the much higher electron mobility in these devices should lead to well defined cyclotron frequencies as well as providing an opportunity to examine effects associated with cutoffs in the phonon-wave vector. The project is under the direction of Dr. James M. Madsen, Department of Physics, Colorado School of Mines, Golden CO 80401, U.S.A., and Professor L.J. Challis, Department of Physics, The University of Nottingham, University Park, Nottingham NG7 2 RD, England. This award recommendation provides funds to cover, as appropriate, international travel, local travel abroad, stipend, dependents allowance, if applicable, language training, if required, and a flat administrative allowance of $250 or the U.S. home institution.