Interaction and Disorder Effects in Condensed Matter Systems

凝聚态系统中的相互作用和无序效应

• 批准号: 0305482
• 负责人: Claudio Chamon
• 金额: $ 27万
• 依托单位: Trustees of Boston University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-07-01 至 2007-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0305482&HistoricalAwards=false
• 关键词: Interaction; Disorder; Effects; Condensed; Matter

This award supports theoretical research directed at advancing our understanding of both the interplay between interaction and disorder effects, and out-of-equilibrium phenomena in condensed matter systems. The research will investigate the combined effects of interaction and disorder in two-dimensional electronic systems, and the consequences of this combination on spin polarization effects in Si-MOSFET's; the possible metallic and glassy phases in thin films where a superconductor-insulator transition is observed; and thermal transport of interacting quasiparticles inside gapless superconductors. The work will address non-equilibrium phenomena, such as spatial heterogeneities and mesoscopic fluctuations in the aging dynamics of glassy systems, and slow relaxation in electronic glasses, such as that recently observed in CdSe artificial solids. Finally, the research will address non-equilibrium transport, detection, and dissipation of spin currents through quantum wires and dots. This award will have a broad impact. While studying phenomena in specific material systems, new theoretical and computational methods will be developed for addressing fundamental problems of out-of-equilibrium phenomena and of combined interaction and disorder effects in condensed matter systems. It will also provide the opportunity for solid education and training of graduate students in these areas. Outreach activities will include continued participation in local high school science fairs.%%%This award supports theoretical research directed at advancing our understanding of both the interplay between interaction and disorder effects, and out-of-equilibrium phenomena in condensed matter systems. The research will investigate the combined effects of interaction and disorder in two-dimensional electronic systems, and the consequences of this combination on spin polarization effects in Si-MOSFET's; the possible metallic and glassy phases in thin films where a superconductor-insulator transition is observed; and thermal transport of interacting quasiparticles inside gapless superconductors. The work will address non-equilibrium phenomena, such as spatial heterogeneities and mesoscopic fluctuations in the aging dynamics of glassy systems, and slow relaxation in electronic glasses, such as that recently observed in CdSe artificial solids. Finally, the research will address non-equilibrium transport, detection, and dissipation of spin currents through quantum wires and dots. This award will have a broad impact. While studying phenomena in specific material systems, new theoretical and computational methods will be developed for addressing fundamental problems of out-of-equilibrium phenomena and of combined interaction and disorder effects in condensed matter systems. It will also provide the opportunity for solid education and training of graduate students in these areas. Outreach activities will include continued participation in local high school science fairs.***

该奖项支持理论研究，旨在促进我们对相互作用和无序效应之间的相互作用以及凝聚态系统中的平衡现象的理解。 该研究将研究二维电子系统中相互作用和无序的综合效应，以及这种组合对Si-MOSFET中自旋极化效应的影响;观察到超导体-绝缘体转变的薄膜中可能的金属和玻璃相;以及无带隙超导体内部相互作用准粒子的热传输。 这项工作将解决非平衡现象，如玻璃系统老化动力学中的空间不均匀性和介观波动，以及电子玻璃中的缓慢弛豫，如最近在CdSe人造固体中观察到的。 最后，研究将解决非平衡传输，检测和通过量子线和量子点的自旋电流耗散。 这个奖项将产生广泛的影响。 在研究特定物质系统中的现象时，将开发新的理论和计算方法，以解决不平衡现象以及凝聚态系统中的相互作用和无序效应的基本问题。 它还将为这些领域的研究生提供扎实的教育和培训机会。 外联活动将包括继续参加当地高中科学博览会。%该奖项支持理论研究，旨在促进我们对相互作用和无序效应之间的相互作用以及凝聚态系统中的平衡现象的理解。 该研究将研究二维电子系统中相互作用和无序的综合效应，以及这种组合对Si-MOSFET中自旋极化效应的影响;观察到超导体-绝缘体转变的薄膜中可能的金属和玻璃相;以及无带隙超导体内部相互作用准粒子的热传输。 这项工作将解决非平衡现象，如玻璃系统老化动力学中的空间不均匀性和介观波动，以及电子玻璃中的缓慢弛豫，如最近在CdSe人造固体中观察到的。 最后，研究将解决非平衡传输，检测和通过量子线和量子点的自旋电流耗散。 这个奖项将产生广泛的影响。 在研究特定物质系统中的现象时，将开发新的理论和计算方法，以解决不平衡现象以及凝聚态系统中的相互作用和无序效应的基本问题。 它还将为这些领域的研究生提供扎实的教育和培训机会。 外联活动将包括继续参加当地高中科学展览会。