Superconducting Diamond for a Quantum Current Standard

用于量子电流标准的超导金刚石

• 批准号: 2727968
• 金额: --
• 依托单位: CARDIFF UNIVERSITY
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2727968
• 关键词: Superconducting; Diamond; Quantum; Current; Standard

This research project will work towards a quantum mechanical definition of the Ampere using an alternative material - superconducting nanocrystalline diamond - in place of traditional superconductors. We recently showed (Carbon 175 (2021): 43-49) that diamond's nanocrystalline microstructure enables us to reproduce the behaviours necessary for defining the Ampere, but at a comparatively large physical scale - only tens of times narrower than a human hair! We can use this increase in scale to our advantage; making and measuring objects of this size is much simpler than with conventional superconductors, using optical lithography rather than more expensive electron beam lithography.

该研究项目将致力于安培的量子力学定义，使用替代材料-超导纳米晶金刚石-代替传统的超导体。我们最近表明（碳175（2021）：43-49），金刚石的纳米晶微结构使我们能够重现定义安培所需的行为，但在相对较大的物理尺度上-仅比人类头发窄数十倍！我们可以利用这种规模的增加为我们的优势;制造和测量这种尺寸的物体比传统的超导体要简单得多，使用光学光刻而不是更昂贵的电子束光刻。