MRI: Development of an ultra-resolution ARPES facility.

MRI：开发超分辨率 ARPES 设施。

• 批准号: 2216487
• 负责人: Daniel Dessau
• 金额: $ 97.5万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2216487&HistoricalAwards=false
• 关键词: MRI; Development; ultra; resolution; ARPES

Nontechnical abstract:This Major Research Instrumentation (MRI) award plans to develop the world’s lowest temperature and highest energy-resolution angle resolved photoemission spectroscopy (ARPES) instrument, bringing almost an order of magnitude improvement in resolution compared to the best presently available in the United States. ARPES is the most direct probe of the quantum behavior of electrons in a solid and is thus indispensable for modern-day physics, chemistry, and materials science research. Nevertheless, it remains limited by the energy and temperature scales of present-day technologies, and the surface sensitivity means that many materials can’t be measured in their uncontaminated state. This facility will resolve these deficiencies by being the first instrument in the United States to bring ARPES to the natural energy and temperature scales of most modern quantum materials as well as by connecting to remote growth facilities via an airplane-transportable customized vacuum suitcase. This instrument will thus allow for a tremendous acceleration in progress towards the community-identified Grand Challenge of measuring, controlling, designing, and synthesizing materials at the fundamental level of the electrons so as to develop the next generation of materials for quantum technologies and energy efficiency. It will give United States researchers a critical new toolset to take the lead in these critical fields of physics, chemistry, and materials science and engineering.Technical abstract:This project plans to develop the world’s lowest temperature and highest resolution ARPES instrument. ARPES is the most direct probe of the quantum behavior of electrons in a solid and is thus indispensable for modern-day physics, chemistry, and materials science research. Nevertheless, it remains limited by the energy and temperature scales of present-day technologies, and the surface sensitivity means that many materials can’t be measured in their uncontaminated state. This facility will resolve these deficiencies by being the first instrument in the US to bring ARPES to the natural energy (sub-meV) and temperature (sub-Kelvin) scales of most modern quantum materials as well as by connecting to remote growth facilities via an airplane-transportable customized vacuum suitcase utilizing standard flag-style sample holders. The instrument will make use of brand-new cryogenic technology developed in Colorado as well as an existing ultra-resolution laser source that will be utilized for the first few years. The plan is for the instrument to eventually move to a beamline at the Advanced Light Source Berkeley, which is being upgraded with a new ultra-resolution monochromator that will be matched to this ARPES instrument. This instrument will thus allow for a tremendous acceleration in progress towards the community-identified Grand Challenge of measuring, controlling, designing, and synthesizing materials at the fundamental level of the electrons so as to develop the next generation of materials for quantum technologies and energy efficiency. It will give United States researchers a critical new toolset to take the lead in these critical fields of physics, chemistry, and materials science and engineering.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

非技术摘要：这项主要的研究仪器（MRI）奖计划计划开发世界上最低的温度和最高能量分辨率角度分辨的光发射光谱仪（ARPES）仪器，与美国目前最佳可用的最佳分辨率相比，分辨率几乎改善了分辨率。 ARPE是对固体中电子量子行为的最直接探测，因此对于现代物理，化学和材料科学研究来说是必不可少的。然而，它仍然受到当今技术的能量和温度尺度的限制，表面敏感性意味着许多材料不能以其未经污染的状态进行测量。该设施将通过成为美国大多数现代量子材料的自然能量和温度尺度以及通过飞机传输可转移的可自定义真空手套的偏远增长设施的自然能量和温度尺度来解决这些缺陷。因此，该仪器将允许在社区认同的巨大挑战中，在电子设备的基本水平上进行测量，控制，设计和合成材料的巨大挑战，以开发量子技术和能源效率的下一代材料。它将为美国的研究人员提供一个关键的新工具集，以在这些关键的物理，化学和材料科学与工程领域中领导。技术摘要：该项目计划开发世界上最低温度和最高分辨率ARPES仪器。 ARPE是对固体中电子量子行为的最直接探测，因此对于现代物理，化学和材料科学研究来说是必不可少的。然而，它仍然受到当今技术的能量和温度尺度的限制，表面敏感性意味着许多材料不能以其未经污染的状态进行测量。该设施将通过成为美国大多数现代量子材料的自然能量（Sub-MEV）和温度（sub-kelvin）尺度的第一台工具来解决这些缺陷，以及通过使用标准标准旗帜样品持有者使用的可使用的可定制的真空装置来连接远程生长设施。该仪器将利用科罗拉多州开发的全新低温技术，以及最初几年将使用的现有超分辨率激光源。该计划是为了使仪器最终在先进的光源伯克利（Berkeley）上移至梁线，该仪表正在使用新的超分辨率单色仪升级，该单色仪将与该ARPES仪器相匹配。因此，该仪器将允许在社区认同的巨大挑战中，在电子设备的基本水平上进行测量，控制，设计和合成材料的巨大挑战，以开发量子技术和能源效率的下一代材料。它将为美国的研究人员提供一个关键的新工具集，以在这些物理，化学和材料科学和工程领域的关键领域领先。该奖项反映了NSF的法定任务，并被认为是通过基金会的知识分子优点和更广泛的影响审查标准来通过评估来获得支持的。