U.S.-Hungary Materials Theory Research on Strongly Correlated and Mesoscopic Systems

美匈强相关介观系统材料理论研究

• 批准号: 0130446
• 负责人: Piers Coleman
• 金额: $ 4.28万
• 依托单位: Rutgers University New Brunswick
• 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: 2002-05-01 至 2007-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0130446&HistoricalAwards=false
• 关键词: U.S.; Hungary; Materials; Theory; Research

This U.S.-Hungarian research project involves two teams led by Piers Coleman of Rutgers University, New Brunswick, and his partner Alfred Zawadowski of the Physics Institute at the Technical University, Budapest. Their collaboration features examination of strongly correlated systems with an emphasis on quantum criticality and superconductivity in heavy fermion systems and electronic correlation effects in mesoscopic devices. These researchers found motivation in recent experiments performed at the magnetic quantum critical point of a heavy fermion metal and in nano-science developments that enable measurements and observations of strongly correlated states in single electron devices.The project's research plan features study of: 1) magnetic quantum critical point in the Kondo lattice; 2) superconducting order in heavy fermion compounds and 3) dynamical and out-of equilibrium properties of quantum dots. Various numerical and analytical methods will be employed including slave particle methods and large N expansions; perturbative renormalization group techniques and e-expansions; and dynamical mean field theory calculations combined with numerical renormalization group methods. If successful, findings should contribute to our knowledge of new phenomena on a nanometer scale that may be applicable in specially fabricated materials. This international research project in materials theory fulfills the program objective of advancing scientific knowledge by enabling experts in the Untied States and Central Europe to combine complementary talents and share research resources in areas of strong mutual interest and competence.

这个美国和匈牙利的研究项目涉及两个团队，由新不伦瑞克罗格斯大学的皮尔斯·科尔曼和他的合作伙伴布达佩斯技术大学物理研究所的阿尔弗雷德·扎瓦多夫斯基领导。他们的合作特点是研究强关联系统，重点是重费米子系统中的量子临界性和超导电性，以及介观设备中的电子关联效应。这些研究人员在最近进行的重费米子金属磁量子临界点的实验中找到了动机，并在纳米科学的发展中找到了动机，使测量和观察单电子设备中的强关联状态成为可能。该项目的研究计划包括以下研究：1)近藤晶格中的磁量子临界点；2)重费米子化合物中的超导秩序；3)量子点的动力学和非平衡性质。将使用各种数值和分析方法，包括从属粒子方法和大N展开；微扰重整化群技术和e展开；以及动力学平均场理论计算和数值重整化群方法相结合。如果成功，这些发现将有助于我们了解纳米级的新现象，这些现象可能适用于特殊制造的材料。这个材料理论的国际研究项目通过使美国和中欧的专家能够结合互补的人才并在相互感兴趣和能力很强的领域共享研究资源，实现了促进科学知识的计划目标。