Combining ab initio Methods and many-Body Theory to Describe the Electron-Phonon Interaction in Real Materials

9973225Freericks/ liu这项资助资助了乔治城大学凝聚态物理领域的两名年轻教员。在克罗地亚还有一个由国际司资助的国际部分。该基金支持对电子-声子超导性的标准Migdal-Eliashberg处理方法中未包括的几种效应进行理论和计算研究。第一原理电子结构计算和多体理论技术的结合将用于在实际材料中研究这些效应。这项工作将有助于阐明电子-声子超导体的传统理论如何以及何时在实际材料中被打破，并将有助于开发更好的方法来理解超导材料的性质。本基金将资助两位在超导理论方面具有互补兴趣和专长的年轻教员的研究。该基金由材料研究部和国际部联合资助。传统超导体与最近发现的所有超导体（掺杂富勒烯、高Tc材料）之间的主要区别在于，在传统材料中超导性如此成功的理论框架，不能应用于新材料。这个项目将分析困难并找到解决办法。

9973225Freericks/LiuThis grant supports two young faculty members in condensed matter physics at the Georgetown University. There is also an international component with Croatia funded by the International division. The grant supports theoretical and computational studies of several effects that are not included in the standard Migdal-Eliashberg treatment of electron-phonon superconductivity. A combination of first-principles electronic structure calculations and many-body theoretical techniques will be used to study these effects in real materials. The work will help elucidate how and when the conventional theory of electron-phonon superconductors breaks down in real materials, and will contribute to development of better methods for understanding the properties of superconducting materials.This grant is to support research of two young faculty with complementary interests and expertise in the theory of superconductivity. The grant is funded jointly by the Divison of Materials Research and the International division. A major difference between the conventional superconductors and essentially all of the ones that have been discovered recently (doped fullerenes, high Tc materials) is that the theoretical framework, so successful in superconductivity in conventional materials, cannot be applied to the new materials. This project will analyze difficulties and find solutions for them.