Theory of Electronic Transport in Disordered Materials

9510185贝里茨这个项目的目标是加强目前对受猝灭无序影响的凝聚态系统的了解。要研究的具体系统包括量子铁磁体、随机场中的磁体、无序超导体和掺杂半导体，以及其他经历金属-绝缘体转变的系统。他使用的方法包括有效场论的构造、重整化群技术和多体微扰理论。该项目的成功完成将有助于了解凝聚态物理的一个重要领域，并将培训具有该领域专门知识的技术人员。%该项目涉及各种材料，例如那些在金属和绝缘之间过渡的材料。这种材料已经冻结在它们里面，如果它们的存在足够强，就会产生某种类型的缺陷，使材料绝缘。例子包括磁体、超导体、半导体和金属，每种都有一种或多种特殊类型的缺陷。通常，缺陷被有意地引入材料中，以使其具有所需的性能。国际和平研究所将使用最先进的理论方法来研究这种现象。PI与马里兰大学的T.R.Kirkpatrick进行了卓有成效的合作。***

9510185 Belitz The objective of this project is to enhance the current understanding of condensed matter systems that are subject to quenched disorder. Specific systems to be studied include quantum ferromagnets, magnets in random fields, disordered superconductors, and doped semiconductors, as well as other systems that undergo a metal-insulator transition. The methods that he uses include the construction of effective field theories, renormalization group techniques, and many-body perturbation theory. A successful completion of the project will contribute to the understanding of an important area of condensed matter physics and will train technical personnel with expertise in this field. %%% The project deals with a variety of materials, such as those with a transition between metallic and insulating phase. Such materials have frozen into them defects of some type that will make the material insulating if their presence is sufficiently strong. Examples include magnets, superconductors, semiconductors, and metals, each with one or more special type of defects. Often, defects are intentionally introduced into materials to give them desired properties. The PI will use state-of-the-art theoretical methods to study such phenomena. The PI carries on a fruitful collaboration with T. R. Kirkpatrick from the University of Maryland. ***