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Fluctuation driven ordering phenomena in Kondo materials

Fluctuation driven ordering phenomena in Kondo materials
近藤材料中波动驱动的有序现象
批准号:
2401977
负责人:
金额:
$0.0万
依托单位:
依托单位国家:
英国
项目类别:
Studentship
财政年份:
2020
资助国家:
英国
项目状态:
未结题
起止时间:
2020 至 --

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中文摘要
翻译
量子涨落可以导致电子之间强相互作用的金属中的奇异有序现象。这种波动在绝对零度下的量子相变附近变得特别强烈。在这样的量子临界点附近,发现了物质的各种新相,如非常规的超导性和奇异的磁态。这种行为在近藤晶格系统中更为丰富,它表现出与传导电子相互作用的局部磁矩。该研究项目的目的是从理论上分析这种材料中的奇异有序现象,使用多体场论的技术,如微扰图解计算和重整化群。其目的是了解潜在的波动驱动的排序机制在一个基本的水平。从长远来看,这些知识可能会用于技术应用。
英文摘要
Quantum fluctuations can lead to exotic ordering phenomena in metals with strong interactions between electrons. Such fluctuations become particularly strong in the vicinity of quantum phase transitions at absolute zero temperature. In the vicinity of such quantum critical points various novel phases of matter are found, such as unconventional superconductivity and exotic magnetic states. The behaviour is even richer in Kondo lattice systems which exhibit local magnetic moments that are interacting with the conduction electrons. The aim of the research project is to theoretically analyse exotic ordering phenomena in such materials, using techniques from many-body field theory, such as perturbative diagrammatic calculations and the renormalisation group. The aim is to understand the underlying fluctuation-driven ordering mechanisms at a fundamental level. This knowledge might feed into technological applications in the long term.
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