mK Dilution Refrigerator with Vector Magnet

带矢量磁铁的 mK 稀释冰箱

• 批准号: 503785742
• 金额: --
• 依托单位: Georg-August-Universität Göttingen
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2022
• 资助国家: 德国
• 起止时间: 2021-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/503785742?language=en
• 关键词: mK; Dilution; Refrigerator; Vector; Magnet

This cryostat will allow to perform magnetotransport experiments down to a temperature of 7 mK and in perpendicular magnetic fields up to 9T, whereas an additional rotatable in-plane field up to 1 T should be available as well. This instrument is of central importance for our planned experiments. With this applied-for instrument we are planning to investigate novel quantum phases in low-dimensional materials. The plans include for example measurements of the order parameters of fractional quantum-Hall states in Bernal-stacked bilayer graphene. Additionally, we aim to investigate novel unconventional superconducting states in graphene magic-angle twisted bilayer graphene. The use of the rotatable in-plane magnetic field will in these experiments help to test the rotational symmetry of such fragile states. Given the small energy scale of the subtle quantum effects, such low temperatures are absolutely necessary for the planned experiments.

这个低温恒温器将允许进行低至7MK的温度和高达9T的垂直磁场中的磁输运实验，同时还应提供高达1T的附加可旋转面内磁场。这台仪器对我们计划中的实验至关重要。利用这一实用仪器，我们计划研究低维材料中的新型量子相。例如，这些计划包括测量伯纳尔堆积的双层石墨烯中分数量子霍尔态的序参数。此外，我们的目标是研究石墨烯魔角扭曲双层石墨烯中的新型非传统超导态。在这些实验中，使用可旋转的面内磁场将有助于测试这些脆弱状态的旋转对称性。考虑到微妙的量子效应的小能量规模，如此低的温度对于计划中的实验是绝对必要的。