Luttinger Liquid and Chaotic Transport in Wet-etched Ballistic Gallium Arsenide-Aluminum Gallium Arsenide Transistors with Multiple Gates

多栅极湿法蚀刻弹道砷化镓铝砷化镓晶体管中的 Luttinger 液体和混沌输运

• 批准号: 9405469
• 负责人: Sean Washburn
• 金额: $ 24万
• 依托单位: University of North Carolina at Chapel Hill
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-08-15 至 1998-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9405469&HistoricalAwards=false
• 关键词: Luttinger; Liquid; Chaotic; Transport; Wet

9405469 Washburn The Principal Investigator will employ interlaced or overlapping gates to govern transmission of carriers into and out of tailored cavities etched into ballistic heterostructures to study a new quantum transport effects. The two main targets of the research are (1) Luttinger correlations among carriers in wires at low carrier density and high magnetic field and (2) chaotic response from specially designed cavities. In both cases gates will cover the entire device to aid in screening by the electrostatic potentials and to allow control over carrier concentration. Separate gates will control transmission coefficients in the probes feeding and sensing the wires and cavities. This will allow, for the first time, individual control over these two critical parameters, which in turn will allow more detailed exploration of these two new areas of transport physics. % % % % The Principal Investigator build new kinds of ballistic electrical devices where the electrons travel in perfect, disorder-free crystals and collide only with features created by the architects of the devices. The devices will allow more complete control of the electrical parameters than has been attempted before. The devices will be used to understand two newly discovered electronic effects of current and fundamental interest to the physics community. The first is a subtle way in which electrons repel each other in the midst of a sea of electrons that is confined so that the electrons cannot easily escape the repulsive forces. The second is the chaotic motion of electrons in situations where irregular orbits are possible. ***

小行星9405469 主要研究者将采用交错或重叠的门来控制载流子进出蚀刻到弹道异质结构中的定制腔的传输，以研究新的量子传输效应。 研究的两个主要目标是：（1）在低载流子密度和高磁场下，线中载流子之间的Luttinger关联;（2）特殊设计的腔的混沌响应。 在这两种情况下，栅极将覆盖整个器件，以帮助通过静电势进行屏蔽，并允许控制载流子浓度。 单独的门将控制探针馈送和感测导线和腔的传输系数。 这将首次允许对这两个关键参数进行单独控制，这反过来又将允许对这两个新的输运物理领域进行更详细的探索。 % % % % 首席研究员建立新型的弹道电气设备，其中电子在完美的，无无序的晶体中旅行，并且只与设备的建筑师创建的特征发生碰撞。 该装置将允许比以前尝试的更完全的电参数控制。 这些设备将被用来理解两个新发现的电子效应的电流和基本利益的物理学界。 第一种是一种微妙的方式，在这种方式中，电子在被限制的电子海中相互排斥，因此电子不能轻易逃脱排斥力。 第二种是在可能有不规则轨道的情况下电子的混沌运动。 ***