Physics of Strong Disorder and Correlation

强无序与相关物理学

• 批准号: 8913624
• 负责人: Patrick Lee
• 金额: $ 22.8万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-12-15 至 1993-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8913624&HistoricalAwards=false
• 关键词: Physics; Strong; Disorder; Correlation

In the past three years they have made significant progress in the study of conductence fluctuations in small devices (mesoscopic physics) and in understanding the metal-insulator transition in terms of the scaling of Fermi liquid parameters. They will extend the studies of mesoscopic physics to the quantum Hall regime. They will study finite size corrections to the Quantum Hall Effect and perform finite size scaling studies of the behavior of the extended state. For fractional Hall steps, their analysis of the data suggests the existence of a novel fractionally charged Fermi liquid state which they hope to describe microscopically, For the metal-insulator transition problem, they propose to study the critical behavior of the Hall constant to see if it can be fitted into the Fermi liquid framework. They will also study the cross-over from hopping to conducting behavior in layered materials, a problem of considerable interest in the oxide superconductivity community.

在过去三年中，他们在以下方面取得了重大进展： 小器件电导涨落研究 （介观物理学）和理解金属绝缘体 转换的费米液体参数的缩放。 他们将把介观物理学的研究扩展到量子 霍尔制度。 他们将研究有限大小的修正， 量子霍尔效应，并进行有限尺寸标度研究， 扩展状态的行为。 对于分数霍尔阶跃， 他们对数据的分析表明 他们希望能将其转化为部分带电的费米液态， 从微观上描述，对于金属-绝缘体转变， 问题，他们建议研究大厅的关键行为 常数，看看它是否可以适合费米液体 框架. 他们还将研究从跳跃到 层状材料的导电行为， 在氧化物超导社区的相当大的兴趣。