POWRE: Enhancement of a Time-Domain Terahertz Spectrometer for Studying Condensed Matter Systems

POWRE：用于研究凝聚态系统的时域太赫兹光谱仪的增强

• 批准号: 9753227
• 负责人: Mary Parks
• 金额: $ 6.19万
• 依托单位: Colgate University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-02-01 至 2000-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9753227&HistoricalAwards=false
• 关键词: POWRE; Enhancement; Time; Domain; Terahertz

9753227 Parks This project seeks new knowledge and understanding of materials that are at the forefront of condensed matter physics research through the use of terahertz spectroscopy. Materials of interest include, for example, a new compound recently discovered that contains clusters of twelve manganese atoms with a total spin of 10. Quantum tunneling of the spin was observed, and because the spin-split levels are separated by energies of 1.2 THz, terahertz spectroscopy is well suited to characterizing these levels. Capability for doing this spectroscopy at temperatures well below the measurement frequency is important for studying other systems as well, such as vibrational modes of semiconductor nanocrystals, quasiparticle scattering rates in high temperature superconductors, and Drude peaks in materials with extremely high electronic effective masses. %%% This is a research enhancement grant made under the Professional Opportunities for Women in Research and Education (POWRE) program. The research will contribute basic materials science knowledge at a fundamental level. An important feature of the program is the integration of research and education through undergraduate student participation in research. ***

9753227 Parks该项目通过使用太赫兹光谱，寻求对凝聚态物理研究前沿材料的新知识和理解。例如，我们感兴趣的材料包括最近发现的一种新化合物，它含有12个锰原子簇，总自旋为10。自旋的量子隧穿被观察到，因为自旋分裂能级被1.2太赫兹的能量分开，太赫兹光谱很适合表征这些能级。在远低于测量频率的温度下进行这种光谱的能力对于研究其他系统也很重要，例如半导体纳米晶体的振动模式，高温超导体中的准粒子散射率，以及具有极高电子有效质量的材料中的德鲁德峰。这是在研究和教育领域妇女专业机会（POWRE）计划下提供的一项研究加强补助金。该研究将在基础水平上提供基础材料科学知识。该计划的一个重要特点是通过本科生参与研究，将研究与教育相结合。＊＊＊