mK Dilution Refrigerator with Vector Magnet

该低温恒温器将允许在高达9T的垂直磁场中进行低至7mk的磁输运实验，同时还应提供高达1t的额外可旋转平面内磁场。这个仪器对我们计划中的实验至关重要。有了这个申请仪器，我们计划在低维材料中研究新的量子相。该计划包括测量分数量子霍尔态的有序参数，例如在伯纳层石墨烯中。此外，我们的目标是在石墨烯的魔角扭曲双层石墨烯中研究新的非常规超导态。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。考虑到微妙量子效应的小能量尺度，如此低的温度对于计划中的实验是绝对必要的。

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.