CAREER: Non-Equilibrium Quantum Transport in Research and Education

职业：研究和教育中的非平衡量子传输

• 批准号: 0548014
• 负责人: Michael Zudov
• 金额: $ 50万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-07-01 至 2013-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0548014&HistoricalAwards=false
• 关键词: CAREER; Non; Equilibrium; Quantum; Transport

*****NON-TECHNICAL ABSTRACT*****Understanding electronic properties of semiconductor quantum devices becomes increasingly important as miniaturization of modern integrated circuits approaches a point where quantum effects come into play. This Faculty Early Career Development (CAREER) project at the University of Minnesota integrates research and education in the area of electronic transport in semiconductor nanostructures. Of particular focus are experimental investigations of peculiar new phenomena recently discovered in GaAs-based quantum devices, which are driven out of their equilibrium state by microwave radiation. In particular, the electrical resistance of such a device can oscillate drastically with an applied weak magnetic field to the extent that the resistance totally vanishes under certain conditions. The physical origin of these oscillations and vanishing resistance remains under debate. By exploring new experimental regimes and techniques this project will provide valuable constraints to guide and filter theoretical models and identify novel technological concepts. The educational component of this project rests on the development of research-driven educational resources and direct involvement of students at all levels and from a variety of backgrounds in cutting-edge research to ready them for careers in nanotechnology industry, government, and academe. *****TECHNICAL ABSTRACT*****This Faculty Early Career Development (CAREER) project at the University of Minnesota integrates research and education in the area of non-equilibrium transport in semiconductor nanostructures. Of particular focus are experimental investigations of peculiar new phenomena, resistance oscillations and zero-resistance states, recently discovered in microwave-illuminated GaAs-based quantum Hall devices. By exploring new experimental regimes and techniques, such as bichromatic and multi-photon microwave spectroscopies, this project will provide valuable constraints to guide and filter theoretical models and identify novel technological concepts. The educational component of this project rests on the development of research-driven educational resources and direct involvement of students at all levels and from a variety of backgrounds in cutting-edge research to ready them for careers in nanotechnology industry, government, and academe.

随着现代集成电路的小型化接近发挥量子效应的程度，理解半导体量子器件的电子性质变得越来越重要。明尼苏达大学的这一学院早期职业发展(CALEAR)项目整合了半导体纳米结构中电子传输领域的研究和教育。特别关注的是对最近在砷化镓基量子器件中发现的特殊新现象的实验研究，这些量子器件在微波辐射的作用下脱离了它们的平衡态。具体地说，这种装置的电阻可以在外加弱磁场的情况下剧烈振荡，以至于在某些条件下电阻完全消失。这些振荡和逐渐消失的阻力的物理来源仍存在争议。通过探索新的实验制度和技术，该项目将为指导和筛选理论模型以及确定新的技术概念提供有价值的约束。该项目的教育部分依赖于研究驱动型教育资源的开发，以及各级和来自不同背景的学生直接参与尖端研究，为他们在纳米技术行业、政府和学术界的职业生涯做好准备。*技术摘要*明尼苏达大学的这项教师早期职业发展(CALEAR)项目整合了半导体纳米结构中非平衡传输领域的研究和教育。特别关注的是最近在微波照明的GaAs基量子霍尔器件中发现的特殊新现象、电阻振荡和零电阻态的实验研究。通过探索新的实验制度和技术，如双色和多光子微波光谱仪，该项目将为指导和筛选理论模型和确定新的技术概念提供有价值的约束。该项目的教育部分依赖于研究驱动型教育资源的开发，以及各级和来自不同背景的学生直接参与尖端研究，为他们在纳米技术行业、政府和学术界的职业生涯做好准备。