Physical Properties of Electron-Doped Copper Oxides

电子掺杂氧化铜的物理性质

• 批准号: 0102350
• 负责人: richard greene
• 金额: $ 31.5万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-08-01 至 2004-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0102350&HistoricalAwards=false
• 关键词: Physical; Properties; Electron; Doped; Copper

This individual investigator award will fund a project to study the superconducting and normal state properties of electron-doped copper oxides, a class of high-temperature superconductors, with the aim of eventually understanding the mechanism of high temperature superconductivity. The electron-doped high-Tc superconductors have some unique properties compared to the more prevalent, and more studied, hole-doped cuprates. A synergistic feedback between the materials preparation of single crystals and thin films, and physical properties is expected to lead to both higher quality materials and new insights into the nature of the normal and superconducting states. The measurements planned include: low temperature thermal and electrical transport, low temperature specific heat, single particle tunneling, Raman scattering and optical reflectivity, photoemission, and penetration depth. All measurements will be done at zero magnetic field to probe the superconducting state and at fields above the critical field to probe the low temperature normal state. This project provides excellent training for graduate students and post doctoral research associates in a multidisciplinary area of research. It will expose them to research tools and ideas that will be useful for careers in industry and academia.The origin of high- temperature superconductivity in copper oxides is one of the major unsolved problems in physics. An understanding of high-Tc superconductors is likely to impact not only fundamental condensed matter physics, but also potential applications of these materials as improved electronics devices and current carrying wires. This individual investigator award will fund a project that has as its goal to understand electron-doped high-Tc superconductors. These materials form a subset of all the high-Tc copper oxides, but they have very unusual properties that need to be understood. The experiments proposed in this project will provide excellent training for graduate students in a multidisciplinary area of research. It will expose students to research tools and ideas that will be of great use in industry.

该单独的研究者奖项将资助一个项目，以研究电子掺杂的铜氧化物（一类高温超导体）的超导和正常状态特性，目的是最终了解高温超导性的机制。与更普遍，更研究的孔掺杂的丘比特相比，电子掺杂的高-TC超导体具有一些独特的特性。单晶和薄膜的材料制备之间的协同反馈和物理特性有望导致更高质量的材料和对正常和超导状态的性质的新见解。计划的测量值包括：低温热和电运输，低温特异性热，单粒子隧道，拉曼散射和光学反射率，光发射和穿透深度。所有测量值将在零磁场上进行，以探测超导状态和临界场以上的磁场，以探测低温正常状态。该项目为研究生提供了出色的培训，并在多学科研究领域的博士研究伙伴提供了出色的培训。它将使他们接触到对工业和学术界职业有用的研究工具和想法。高温超导性铜氧化物的起源是物理学中主要未解决的问题之一。对高-TC超导体的了解不仅可能影响基本的凝结物理学，而且还会影响这些材料作为改进的电子设备和电流携带电线的潜在应用。该个人调查员奖将资助一个项目，该项目的目标是了解电子掺杂的高-TC超导体。这些材料构成了所有高-TC铜氧化物的子集，但是它们具有非常不寻常的特性，需要理解。该项目提出的实验将为多学科研究领域的研究生提供出色的培训。它将使学生了解在行业中极大地利用的研究工具和想法。