Acquisition of a Dilution Refrigerator

购买稀释冰箱

• 批准号: 9311739
• 负责人: Michael Naughton
• 金额: $ 4.5万
• 依托单位: SUNY at Buffalo
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-07-15 至 1994-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9311739&HistoricalAwards=false
• 关键词: Acquisition; Dilution; Refrigerator

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.

在本项目中，将使用稀释制冷机来达到 在大的静磁场中， 超过25毫开尔文 它将拥有至少300微瓦的 0.1开尔文的冷却能力。 冰箱将用于 准一维“精细结构”现象的研究 和准二维导体。 特别是几 特定低温、高磁场、角度相关 将研究有机（超）导体中的现象， 在无机，电荷密度波系统，并在新的 铁磁门控半导体异质结构。 在有机超导材料中，我们确定了四种相关的 电子和磁现象独特的这些低维 材料，其研究需要低温 稀释冰箱提供的环境。 存在 这些现象中的一种已经被实验证实， 没有理论上的解释，两个仍然存在争议， 另一个尚待调查。