Superconductivity, Correlations, and Nonequilibrium Phenomena in Novel Low Dimensional Systems
Superconductivity, Correlations, and Nonequilibrium Phenomena in Novel Low Dimensional Systems
批准号:
0204871
负责人:
Philip Adams
金额:
$31.51万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
2002
资助国家:
美国
项目状态:
已结题
起止时间:
2002-06-01 至 2006-05-31
中文摘要
该个人研究者奖将为一个专注于二维系统中电子相关效应研究的项目提供支持,例如超薄磁性杂质掺杂Be薄膜和超薄超导Be和Al薄膜。 一些具有强层状结构的块状材料,如超导LaSb 2和变磁SmSb 2也将被研究。 该计划的主要目标之一是研究这些系统在高磁场和低温下的输运和隧穿特性。 他们在这种极端环境中的行为使我们深入了解低维度、无序和相关性如何引起奇异效应,如状态记忆、重入、多重磁阻、非平衡涨落和量子跃迁。 除了处于凝聚态研究的最前沿,该计划还将为培训本科生,研究生和K-12科学教师提供重要场所。 后者将通过赞助“为美国而教”军团成员的夏季实习而成为可能。这个个人研究者奖为一个项目提供了支持,该项目研究了电子之间的排斥相互作用如何影响它们的导电能力,更重要的是,这些相互作用如何协调看似不可能的行为,如记忆效应和应用磁场时电阻的极大增加。 重点放在系统的电子运动被限制在一个平面,如金属薄膜的情况下,只有几个原子厚。 这些系统的行为让我们深入了解低维、无序和电子相关性如何产生新的、也许有用的特性,这些特性有朝一日可能会与技术相关。 这种类型的搜索和发现研究对于保持国家研究和开发企业的健康发展非常重要。 该计划还为培训本科生,研究生和K-12科学教师提供了重要场所。 后者是通过成为“为美国而教”军团成员的暑期实习赞助商而成为可能的。
英文摘要
This individual investigator award will provide support for a program that focuses on the study of electron correlation effects in two-dimensional systems, such as ultra-thin magnetic-impurity-doped Be films, and ultra-thin superconducting Be and Al films. Some bulk materials with a strongly layered structure such as superconducting LaSb2 and metamagnetic SmSb2 will also be studied. One of the primary goals of the program is to investigate the transport and tunneling characteristics of these systems in high magnetic fields and low temperatures. Their behavior in such extreme environments gives insight into how low dimensionality, disorder, and correlations can give rise to exotic effects such state memory, reentrance, multifold magnetoresistance, non-equilibrium fluctuations, and quantum transitions. Besides being at the forefront of condensed matter research, the program will provide an important venue for the training undergraduates, graduate students, and K-12 science teachers. The latter will be made possible by sponsoring summer internships for "Teach For America" corps members. This individual investigator award provides support for a program that investigates how the repulsive interactions between electrons affects their ability to conduct electricity and more importantly how these interactions can orchestrate seemingly improbable behavior such as memory effects and extremely large increases in resistance with the application of magnetic field. Emphasis is placed on systems for which the electron motion is confined to a plane such as is the case for metal films that are only a few atoms thick. The behavior of these systems gives insight into how low dimensionality, disorder, and electronic correlations can give rise to novel and perhaps useful properties that may one day be of technological relevance. This type of search and discovery research is important for maintaining the health of the national research and development enterprise. The program also provides an important venue for the training undergraduates, graduate students, and K-12 science teachers. The latter is made possible by being a summer internship sponsor for "Teach For America" corps members.
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会议论文
Disorder and Correlations in Novel Low Dimensional Systems
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批准号:9972151
-
项目类别:Continuing Grant
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资助金额:$28.5万
-
财政年份:1999
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负责人:Philip Adams
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依托单位:
Disorder and Correlations in Novel Two-Dimensional Systems
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批准号:9501160
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项目类别:Continuing Grant
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资助金额:$19.1万
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财政年份:1995
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负责人:Philip Adams
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依托单位:
Disorder and Correlations in Novel Two-Dimensional Systems
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批准号:9204206
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项目类别:Continuing Grant
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资助金额:$13.5万
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财政年份:1992
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负责人:Philip Adams
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依托单位:
NSF Young Investigator Award
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批准号:9258271
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项目类别:Continuing Grant
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资助金额:$23.75万
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财政年份:1992
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负责人:Philip Adams
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依托单位:
Electron Transport on Hydrogen
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批准号:8911233
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项目类别:Standard Grant
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资助金额:$9.0万
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财政年份:1990
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负责人:Philip Adams
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依托单位:
海外基金