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
• 金额: --
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2401977
• 关键词: Fluctuation; driven; ordering; phenomena; Kondo

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.

量子涨落可能会导致电子之间具有强相互作用的金属出现奇异的有序现象。这种波动在绝对零温度的量子相变附近变得特别强烈。在这些量子临界点附近，发现了各种新颖的物质相，例如非常规超导性和奇异的磁态。这种行为在近藤晶格系统中更加丰富，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利用多体场理论的技术，例如微扰图解计算和重正化群，从理论上分析此类材料中的奇异有序现象。目的是从根本上理解潜在的波动驱动的排序机制。从长远来看，这些知识可能会融入到技术应用中。