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.

该低温恒温器将使磁通转运实验降低至7 MK的温度，在垂直的磁场中，最多9T的磁场，而另外最高可旋转的平面内场也应提供1 t。对于我们计划的实验，该工具至关重要。使用这种应用的仪器，我们计划研究低维材料中的新量子阶段。这些计划包括例如测量Bernal堆叠双层石墨烯中分数量子孔状态的顺序参数。此外，我们旨在研究石墨烯魔法扭曲的双层石墨烯中新型的非常规超导状态。在这些实验中，使用可旋转的面内磁场将有助于测试这种脆弱状态的旋转对称性。考虑到微妙的量子效应的较小能量尺度，对于计划的实验，这种低温是绝对必要的。