US-India Cooperative Research: Investigation of the Superelectron Density at the Superconductor-Insulator(SI) Transition in Two Dimensions

美印合作研究：二维超导体-绝缘体（SI）转变处的超电子密度研究

• 批准号: 0216755
• 负责人: Allen Goldman
• 金额: --
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-01 至 2008-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0216755&HistoricalAwards=false
• 关键词: US; India; Cooperative; Research; Investigation

0216755GoldmanDescription: This award supports US-India cooperative research entitled Investigation of the Superelectron Density at the Superconductor-Insulator (SI) Transition in Two Dimensions. US PI Allen Goldman, Institute of Technology Distinguished Professor of Physics, University of Minnesota will start a collaborative research program with N. Chandrasekhar, Indian Institute of Science (IISc). Goldman's NSF supported research focuses on properties of electrons confined to a plane (2D), particularly superconductivity in the extreme 2D limit, where there are issues of quantum critical behavior and the existence of a metallic state in 2D. Chandrasekhar's efforts are concentrated on similar problems, but with specific experimental investigations, which differ from Goldman's. They propose to join forces to carry out investigations on a subset of their respective broader programs. Scope: This research will add an international dimension to both research programs and will greatly speed the progress of research on measurements of the superfluid density near the SI transition. The collaboration will enhance the training of graduate students and postdocs at both institutions and promote interaction between the powerful groups in condensed matter theory at the IISc, (Ramakrishnan) and at Minnesota (Larkin and Glazman). These individuals are world-class theoreticians. Goldman's research program is very strong in the development of young scientists. This activity is supported by the Indian Department of Science & Technology (DST) under the NSF/DST joint program.

描述：该奖项支持美印合作研究，题为“二维超导体-绝缘体（SI）跃迁中的超电子密度研究”。明尼苏达大学理工学院物理系杰出教授PI Allen Goldman将与印度科学研究所（IISc）的N. Chandrasekhar启动一项合作研究项目。goldmannsf支持的研究重点是局限于平面（2D）的电子特性，特别是在极端2D极限下的超导性，其中存在量子临界行为和二维金属态存在的问题。钱德拉塞卡的工作集中在类似的问题上，但进行了具体的实验调查，这与高盛的不同。他们提议联合起来，对各自更广泛计划的一个子集进行调查。研究范围：这项研究将为这两个研究项目增加一个国际维度，并将大大加快在SI转换附近超流体密度测量的研究进展。这项合作将加强两所机构对研究生和博士后的培训，并促进印度科学院（Ramakrishnan）和明尼苏达大学（Larkin和Glazman）凝聚态理论领域的强大团队之间的互动。这些人都是世界级的理论家。高盛的研究项目在培养年轻科学家方面非常强大。这项活动由印度科学技术部（DST）在国家科学基金会/DST联合项目下提供支持。

项目成果

Quantum Superconductor-Metal Transitions in the Presence of Quenched Disorder

• DOI: 10.1007/s10948-019-05250-1
• 发表时间: 2020-01
• 期刊: Journal of Superconductivity and Novel Magnetism
• 影响因子: 1.8
• 作者: Nicholas A. Lewellyn;Ilana M. Percher;J. Nelson;J. García‐Barriocanal;I. Volotsenko;A. Frydman;T. Voj