Acquisition of a Dilution Refrigerator

在这个项目中，稀释冰箱将被用来达到并在大的静态磁场中保持低于25毫开尔文的温度。在0.1开尔文的温度下，它将拥有至少300微瓦的冷却功率。该制冷机将用于研究准一维和准二维导体的“精细结构”现象。特别是，在有机(超导体)、无机、电荷密度波系统和新型铁磁门半导体异质结中，一些特殊的低温、强磁场、角度相关现象将被研究。在有机超导材料中，我们发现了这些低维材料特有的四种相关的电磁现象，对它们的研究需要稀释式制冷机提供的低温环境。其中一种现象的存在已经得到了实验验证，但没有从理论上解释，两种现象仍然存在争议，另一种还有待调查。

In this project, a dilution refrigerator will be used to reach and maintain in large static magnetic fields temperatures less than 25 milliKelvin. It will possess at least 300 microwatts of cooling power at 0.1 Kelvin. The refrigerator will be used in research on "fine structure" phenomena in quasi-one dimensional and quasi-two dimensional conductors. In particular, several specific low temperature, high magnetic field, angular-dependent phenomena will be investigated in the organic (super) conductors, in the inorganic, charge-density-wave systems, and in novel ferromagnetically gated semiconductor heterostructures. In the organic superconductor materials, we identify four related electronic and magnetic phenomena unique to these low dimensional materials, the study of which requires the low temperature environment provided by the dilution refrigerator. The existence of one of these phenomena has been experimentally verified but not theoretically explained, two remain in contention, and another is yet to be investigated.