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.

这项美国匈牙利研究项目涉及新不伦瑞克省罗格斯大学的皮尔斯·科尔曼（Piers Coleman）和他的合伙人阿尔弗雷德·扎瓦多夫斯基（Alfred Zawadowski），布达佩斯（Budapest）的物理研究所的Alfred Zawadowski。 他们对密切相关系统的协作特征检查，重点是重型费米昂系统中的量子临界和超导性，以及介观设备中的电子相关效应。 这些研究人员发现，在重型金属的磁量子临界点和纳米科学的发展中，在单个电子设备中对强相关状态的测量和观察结果。 2）量子点的重型费米化合物中的超导顺序和3）量子点的动态和平衡性能。 将采用各种数值和分析方法，包括从属粒子方法和大型N扩展；扰动重新归一化组技术和电子扩展；和动态平均场理论计算结合了数值重新归一化组方法。 如果成功的话，发现应该有助于我们对可能适用于专门制造材料的纳米量表的新现象的了解。材料理论的国际研究项目实现了计划的目标，即通过使无关的州和中欧的专家能够在浓厚的共同利益和能力领域中共享互补才能并共享研究资源，从而实现了促进科学知识的计划。