Thermodynamic Measurements of Interacting Disordered Quantum Hall Systems
相互作用的无序量子霍尔系统的热力学测量
基本信息
- 批准号:0071969
- 负责人:
- 金额:$ 24.6万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2000
- 资助国家:美国
- 起止时间:2000-08-01 至 2004-01-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Jiang0071969This research is focused on the thermodynamic measurements of interacting disordered semiconductor heterostructures. The problem of strong correlations, in low-dimensional quantum systems, is made more difficult by the presence of disorder. Particularly, the thermodynamic properties of interacting disordered quantum Hall devices is still poorly understood. A high density GaAs/AlGaAs quantum well structure with two populated subbands as well as a p-type single-heterostructure with highly correlated holes will be used for the investigations. Compressibility will be measured by using a field-penetration technique to probe the internal interaction energy. Magnetization will be measured by a torsional magnetometer to determine the spin polarization at different electronic phases. Various physical regimes will be explored following the "road-maps" obtained from early transport studies. Electrically controlled gates will be used to vary the density, to alter the screening properties, and to change the spatial correlation of the disorder. Contemporary issues, such as the nature of the zero-field 2D metal-insulator transition, its relation to quantum Hall effect, and consequences of Landau level interactions in two-component systems, will be addressed. This project will also provide an excellent training for graduate and undergraduate students in this program for solid state electronics field. In fact, the semiconductor device fabrication and characterization aspects of the work overlaps closely with what is going on right now in semiconductor electronics industry.%%%This project is concentrated on the study of thermal properties of thin-layered semiconductor structures in the presence of both disorder and carrier interaction. Similar structures are currently used for high-speed electronics and opto-electronics technologies. Due to the intricate interplay of disorder and interaction, the properties of these advanced devices are less predictable, and sometimes even appear to be mysterious. The proposed experiments study the thermal properties of several poorly understood quantum electronic phases by using several high-sensitivity measurement techniques. The main objective is to establish a better understanding on the underlying physical principle of these phases and the wealth of effects exhibited. The better understandings can, in turn, provide a basis for designing the next generation of electronics. The concepts obtained from the proposed experiments can be applied to some of the more complex condensed matter systems. The work concerning electron spins could potentially have impact on the development of future quantum information processing systems for quantum computing and quantum communications. This project will also provide an excellent training for graduate and undergraduate students in this program for solid state electronics field. In fact, the semiconductor device fabrication and characterization aspects of the work overlaps closely with what is going on right now in semiconductor electronics industry.
本文主要研究相互作用无序半导体异质结构的热力学测量。在低维量子系统中,强相关性的问题由于无序的存在而变得更加困难。特别是,相互作用的无序量子霍尔器件的热力学性质仍然知之甚少。具有两个填充子带的高密度GaAs/AlGaAs量子阱结构以及具有高度相关空穴的p型单异质结构将用于研究。可压缩性将通过使用场穿透技术来探测内部相互作用能来测量。磁化强度将由扭磁强计测量,以确定不同电子相位的自旋极化。将根据从早期运输研究中获得的“路线图”探索各种物理机制。电子控制门将被用来改变密度,改变筛选特性,并改变无序的空间相关性。当代问题,如零场二维金属-绝缘体跃迁的性质,其与量子霍尔效应的关系,以及双组分系统中朗道能级相互作用的后果,将被解决。本项目也将为固态电子领域的研究生和本科生提供良好的培训。事实上,半导体器件制造和表征方面的工作与半导体电子工业目前正在进行的工作密切重叠。本项目主要研究无序和载流子相互作用下薄层半导体结构的热特性。类似的结构目前用于高速电子和光电技术。由于无序和相互作用的复杂相互作用,这些先进设备的特性难以预测,有时甚至看起来很神秘。提出的实验通过使用几种高灵敏度测量技术来研究几种鲜为人知的量子电子相的热性质。主要目的是更好地理解这些相的基本物理原理和所显示的丰富效应。更好的理解可以反过来为设计下一代电子产品提供基础。从所提出的实验中得到的概念可以应用于一些更复杂的凝聚态系统。有关电子自旋的工作可能对未来量子计算和量子通信的量子信息处理系统的发展产生潜在影响。本项目也将为固态电子领域的研究生和本科生提供良好的培训。事实上,半导体器件制造和表征方面的工作与半导体电子工业目前正在进行的工作密切重叠。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
数据更新时间:{{ journalArticles.updateTime }}
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
Hong-Wen Jiang其他文献
Controlling Synthetic Spin-Orbit Coupling in a Silicon Quantum Dot with Magnetic Field
用磁场控制硅量子点中的合成自旋轨道耦合
- DOI:
10.1103/physrevapplied.15.044042 - 发表时间:
2020-12 - 期刊:
- 影响因子:4.6
- 作者:
Xin Zhang;Yuan Zhou;Rui-Zi Hu;Rong-Long Ma;Ming Ni;Ke Wang;Gang Luo;Gang Cao;Gui-Lei Wang;Peihao Huang;Xuedong Hu;Hong-Wen Jiang;Hai-Ou Li;Guang-Can Guo;Guo-Ping Guo - 通讯作者:
Guo-Ping Guo
Hong-Wen Jiang的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('Hong-Wen Jiang', 18)}}的其他基金
Experimental investigation of topological excitations in magnetic tunneling junctions
磁隧道结拓扑激发的实验研究
- 批准号:
1809155 - 财政年份:2018
- 资助金额:
$ 24.6万 - 项目类别:
Continuing Grant
High-Sensitivity Measurements of Interacting Disordered Quantum Hall Systems
相互作用的无序量子霍尔系统的高灵敏度测量
- 批准号:
0804794 - 财政年份:2008
- 资助金额:
$ 24.6万 - 项目类别:
Continuing Grant
High-Sensitivity Thermodynamic Measurements of Interacting Disordered Quantum Hall Systems
相互作用的无序量子霍尔系统的高灵敏度热力学测量
- 批准号:
0404445 - 财政年份:2004
- 资助金额:
$ 24.6万 - 项目类别:
Continuing Grant
Experimental Investigation of Delocalization and Phase Diagram in Quantum Hall Systems
量子霍尔系统离域和相图的实验研究
- 批准号:
9705439 - 财政年份:1997
- 资助金额:
$ 24.6万 - 项目类别:
Continuing Grant
Delocalization and Phase-transition in Quantum Hall Devices
量子霍尔器件中的离域和相变
- 批准号:
9313786 - 财政年份:1994
- 资助金额:
$ 24.6万 - 项目类别:
Continuing Grant
相似海外基金
Collaborative Research: Laboratory Measurements of Oxygen (O) and Nitrogen (N2) Ultraviolet (UV) Cross Sections by Particle Impact for Remote Sensing of Thermosphere O/N2 Variation
合作研究:通过粒子撞击实验室测量氧气 (O) 和氮气 (N2) 紫外线 (UV) 截面,以遥感热层 O/N2 变化
- 批准号:
2334619 - 财政年份:2024
- 资助金额:
$ 24.6万 - 项目类别:
Standard Grant
Collaborative Research: Using Polarimetric Radar Observations, Cloud Modeling, and In Situ Aircraft Measurements for Large Hail Detection and Warning of Impending Hail
合作研究:利用偏振雷达观测、云建模和现场飞机测量来检测大冰雹并预警即将发生的冰雹
- 批准号:
2344259 - 财政年份:2024
- 资助金额:
$ 24.6万 - 项目类别:
Standard Grant
Electrical conductivity measurements of silicate melts at the Earth's mantle conditions
地幔条件下硅酸盐熔体的电导率测量
- 批准号:
24K17146 - 财政年份:2024
- 资助金额:
$ 24.6万 - 项目类别:
Grant-in-Aid for Early-Career Scientists
Collaborative Research: Using Polarimetric Radar Observations, Cloud Modeling, and In Situ Aircraft Measurements for Large Hail Detection and Warning of Impending Hail
合作研究:利用偏振雷达观测、云建模和现场飞机测量来检测大冰雹并预警即将发生的冰雹
- 批准号:
2344260 - 财政年份:2024
- 资助金额:
$ 24.6万 - 项目类别:
Standard Grant
Continuing Measurements of Water Vapor, Clouds, Aerosol, and Waves Above, and Across, the Tropical Tropopause Layer with in Situ Instruments on Circum-Tropical Isopycnic Balloons
使用环热带等密度气球上的现场仪器持续测量热带对流层顶层上方和上方的水蒸气、云、气溶胶和波浪
- 批准号:
2336110 - 财政年份:2024
- 资助金额:
$ 24.6万 - 项目类别:
Continuing Grant
SUPer-REsolution non-invasive Muscle measurements with miniaturised magnetIc SEnsors (SUPREMISE)
使用微型磁性传感器 (SUPREMISE) 进行超分辨率非侵入性肌肉测量
- 批准号:
EP/X031950/1 - 财政年份:2024
- 资助金额:
$ 24.6万 - 项目类别:
Fellowship
Indoor air quality measurements of formaldehyde using low cost sensors
使用低成本传感器测量室内空气质量甲醛
- 批准号:
10090803 - 财政年份:2024
- 资助金额:
$ 24.6万 - 项目类别:
Collaborative R&D
Collaborative Research: Laboratory Measurements of Oxygen (O) and Nitrogen (N2) Ultraviolet (UV) Cross Sections by Particle Impact for Remote Sensing of Thermosphere O/N2 Variation
合作研究:通过粒子撞击实验室测量氧气 (O) 和氮气 (N2) 紫外线 (UV) 截面,以遥感热层 O/N2 变化
- 批准号:
2334618 - 财政年份:2024
- 资助金额:
$ 24.6万 - 项目类别:
Continuing Grant
Validation of on-farm measurements of green-house gas emissions
验证农场温室气体排放测量结果
- 批准号:
10098066 - 财政年份:2024
- 资助金额:
$ 24.6万 - 项目类别:
Collaborative R&D
Advancing Understanding of Super-Coarse and Giant Dust Particles via Novel Measurements of Emission and Transport
通过新颖的排放和传输测量方法增进对超粗和巨型灰尘颗粒的了解
- 批准号:
2336111 - 财政年份:2024
- 资助金额:
$ 24.6万 - 项目类别:
Continuing Grant