Noise, inelastic processes, and coherence in atomic-scale and molecular junctions
原子尺度和分子连接中的噪声、非弹性过程和相干性
基本信息
- 批准号:1305879
- 负责人:
- 金额:$ 40.5万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2013
- 资助国家:美国
- 起止时间:2013-06-15 至 2017-05-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
****Technical Abstract****The fate of quantum coherence and the mechanisms of dissipation at the nanoscale are of fundamental scientific interest and have potential relevance to nanoelectronic technologies. This project will use radio frequency noise measurements and sensitive electronic transport techniques to examine atomic and molecular-scale junctions driven out of equilibrium. The scaling of nonequilibrium noise with bias and device temperature allows determination of the effective temperature of the driven electrons. In junctions containing unpaired localized spins, noise measurements will probe Kondo physics, a consequence of quantum entanglement between the local spin and those of the conduction electrons. Measurements of the bias and temperature dependence of conductance fluctuations will allow the estimation of the quantum coherence time for electrons in these nanostructures even near room temperature. These experiments will provide outstanding research training in advanced fabrication and measurement skills (relevant for high technology industry) for two PhD students. Results will be disseminated to the general public and K12 students through blogging and interactions with local museums.****Non-Technical Abstract****Familiar to anyone who has ever used a toaster, when electric current flows through a macroscopic wire, energy carried by the moving electrons ends up in the form of heat, and the counterintuitive physics of quantum mechanics does not seem relevant. However, when the current passes through a single atom or molecule, the way that heat gets generated and the role of quantum effects (that govern chemistry and physics at such scales) are much less transparent. In this project two doctoral students will make atomic-scale junctions and use sensitive measurements of the current and its fluctuations as a function of time and voltage to "take the temperature" of the electrons, and to see the consequences of quantum mechanics on electrical conduction. Understanding heating and quantum effects at these scales is relevant to the development of next-generation nanoelectronics technologies. Students educated and trained in this area will be well positioned for jobs in high tech industry or research, and the PI will disseminate results to the general public and K12 students through blogging and interactions with local museums.
* 技术摘要 * 量子相干性的命运和纳米级耗散机制具有根本的科学意义,并与纳米电子技术具有潜在的相关性。 该项目将使用射频噪声测量和敏感的电子输运技术来研究原子和分子尺度的结被驱动出平衡。 非平衡噪声与偏置和器件温度的缩放允许被驱动电子的有效温度的确定。 在含有未成对局域自旋的结中,噪声测量将探测近藤物理,这是局域自旋和传导电子自旋之间量子纠缠的结果。 电导波动的偏压和温度依赖性的测量将允许在这些纳米结构中的电子的量子相干时间的估计,甚至接近室温。 这些实验将为两名博士生提供先进制造和测量技能(与高科技行业相关)的优秀研究培训。 结果将通过博客和与当地博物馆的互动传播给公众和K12学生。非技术摘要 * 任何使用过烤面包机的人都很熟悉,当电流流过宏观导线时,运动的电子携带的能量最终以热的形式存在,量子力学的反直觉物理学似乎并不相关。 然而,当电流通过单个原子或分子时,热量产生的方式和量子效应的作用(在这种尺度上控制化学和物理学)就不那么透明了。 在这个项目中,两名博士生将制作原子级的结,并使用电流及其波动作为时间和电压的函数的灵敏测量来“测量电子的温度”,并观察量子力学对导电的影响。 了解这些尺度上的加热和量子效应与下一代纳米电子技术的发展相关。 在这一领域接受教育和培训的学生将很好地定位于高科技行业或研究的工作,PI将通过博客和与当地博物馆的互动向公众和K12学生传播结果。
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)
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Douglas Natelson其他文献
Thermal Conductivity in Glasses Below 1K: New Technique and Results
- DOI:
10.1023/a:1004689828780 - 发表时间:
2000-08-01 - 期刊:
- 影响因子:1.400
- 作者:
Danna Rosenberg;Douglas Natelson;D. D. Osheroff - 通讯作者:
D. D. Osheroff
Better than average
优于平均水平
- DOI:
10.1038/nnano.2009.124 - 发表时间:
2009-05-24 - 期刊:
- 影响因子:34.900
- 作者:
Douglas Natelson - 通讯作者:
Douglas Natelson
A solid triple point
一个稳定的三相点
- DOI:
10.1038/500408a - 发表时间:
2013-08-21 - 期刊:
- 影响因子:48.500
- 作者:
Douglas Natelson - 通讯作者:
Douglas Natelson
Anomalous dielectric properties of amorphous solids at low temperatures
- DOI:
10.1016/0921-4526(95)00708-3 - 发表时间:
1996-04-01 - 期刊:
- 影响因子:
- 作者:
D.D. Osheroff;Sven Rogge;Douglas Natelson - 通讯作者:
Douglas Natelson
Nonequilibrium and hysteretic low temperature dielectric response to strain in glasses
- DOI:
10.1007/bf02395933 - 发表时间:
1997-03-01 - 期刊:
- 影响因子:1.400
- 作者:
Sven Rogge;Douglas Natelson;D. D. Osheroff - 通讯作者:
D. D. Osheroff
Douglas Natelson的其他文献
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{{ truncateString('Douglas Natelson', 18)}}的其他基金
Electrically driven plasmonic light emitters strongly coupled to excitons and dielectric resonators
与激子和介电谐振器强耦合的电驱动等离子体发光体
- 批准号:
2309941 - 财政年份:2023
- 资助金额:
$ 40.5万 - 项目类别:
Standard Grant
Angular momentum transport in insulators: Magnons and other emergent excitations
绝缘体中的角动量传输:磁振子和其他紧急激发
- 批准号:
2102028 - 财政年份:2021
- 资助金额:
$ 40.5万 - 项目类别:
Standard Grant
Thermoelectric metal nanostructures: Disorder, plasmons, and photodetection
热电金属纳米结构:无序、等离激元和光电检测
- 批准号:
1704625 - 财政年份:2017
- 资助金额:
$ 40.5万 - 项目类别:
Standard Grant
Noise in 2d topological edges and spin Hall systems
二维拓扑边缘和自旋霍尔系统中的噪声
- 批准号:
1704264 - 财政年份:2017
- 资助金额:
$ 40.5万 - 项目类别:
Continuing Grant
MRI: Acquisition of a Nanoscribe nano3d Printer/Optical Lithography System
MRI:购买 Nanoscribe nano3d 打印机/光学光刻系统
- 批准号:
1625186 - 财政年份:2016
- 资助金额:
$ 40.5万 - 项目类别:
Standard Grant
Workshop Proposal: Interacting Quantum Systems Out of Equilibrium
研讨会提案:非平衡态量子系统的相互作用
- 批准号:
1619989 - 财政年份:2016
- 资助金额:
$ 40.5万 - 项目类别:
Standard Grant
Exploring charge transfer at organic device interfaces
探索有机器件界面的电荷转移
- 批准号:
0901348 - 财政年份:2009
- 资助金额:
$ 40.5万 - 项目类别:
Standard Grant
Noise and High Frequency Properties of Single-Molecule Transistors
单分子晶体管的噪声和高频特性
- 批准号:
0855607 - 财政年份:2009
- 资助金额:
$ 40.5万 - 项目类别:
Continuing Grant
Organic Semiconductor Devices: Contacts, Transport and the Nanoscale Limit
有机半导体器件:接触、传输和纳米尺度极限
- 批准号:
0601303 - 财政年份:2006
- 资助金额:
$ 40.5万 - 项目类别:
Standard Grant
CAREER: Conduction at the Molecular Scale and Nanoscience Education
职业:分子尺度传导和纳米科学教育
- 批准号:
0347253 - 财政年份:2004
- 资助金额:
$ 40.5万 - 项目类别:
Continuing Grant
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基于α非弹性散射的碳燃烧过程新方法
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