U.S.-Austria and Germany Cooperative Research on Electrical Transport in Magnetic Multilayers

美国-奥地利和德国合作研究磁性多层膜中的电传输

• 批准号: 9602192
• 负责人: Peter Levy
• 金额: $ 2.3万
• 依托单位: New York University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-11-01 至 1999-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9602192&HistoricalAwards=false
• 关键词: U.S.; Austria; Germany; Cooperative; Research

This award supports Professor Peter Levy and junior members of his research group at New York University to collaborate in solid state physics research with Professor Peter Weinberger and his research group of the Institute of Electrochemistry of the Technical University of Vienna, Austria. A third member of the collaboration is Professor I. Mertig of the Technical University of Dresden, Germany. . Through collaboration, they expect to develop models and perform calculations that will provide new insights into the factors that control the magnetotransport properties of transition-metal magnetic multilayers. While all three groups are theoretical in their orientation, their efforts are complementary. The US group is focused on analytical and model calculations while the expertise of the Austrian group lies in the ab-initio calculation of electronic structure, magnetic and transport properties of solids. Professor Mertig of Dresden has considerable expertise in the application of multiple scattering theory to the calculation of impurity scattering in ferromagnetic metals. The `giant magnetoresistance` of magnetic multilayers is interesting both for the fundamental physics needed to explain its origins and for its applicability to emerging computer technologies. While there is consensus that this effect comes from the magnetic field changing the spin-dependent scattering of the conduction electrons, the there are many unresolved questions about how this is achieved and which are the dominant factors at different levels of the multiple layers. This trilateral collaboration will address some of those questions, and contribute some of the new understanding of this phenomenon needed before any attempt can be made to manipulate and use it.

该奖项支持纽约大学Peter Levy教授及其研究小组的初级成员与奥地利维也纳技术大学电化学研究所的Peter Weinberger教授及其研究小组在固体物理研究方面进行合作。 该合作的第三位成员是德国德累斯顿工业大学的 I. Mertig 教授。 。 通过合作，他们希望开发模型并进行计算，为控制过渡金属磁性多层磁输运特性的因素提供新的见解。 虽然这三个小组的方向都是理论性的，但他们的努力是互补的。 美国小组专注于分析和模型计算，而奥地利小组的专长在于固体电子结构、磁性和输运性质的从头计算。 德累斯顿的 Mertig 教授在将多重散射理论应用于铁磁金属中的杂质散射计算方面拥有丰富的专业知识。 磁性多层膜的“巨磁阻”对于解释其起源所需的基础物理学以及其对新兴计算机技术的适用性都很有趣。 虽然人们一致认为这种效应来自于磁场改变了传导电子的自旋相关散射，但关于如何实现这一效应以及哪些是多层不同级别的主导因素，还有许多未解决的问题。 此次三边合作将解决其中一些问题，并在尝试操纵和使用这种现象之前提供一些所需的新理解。