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.

这一个人研究人员奖将资助一个项目，研究电子掺杂氧化铜的超导和正常态性质，这是一种高温超导体，目的是最终了解高温超导的机制。与更普遍、更多研究的空穴掺杂铜酸盐相比，电子掺杂的高T_c超导体具有一些独特的性质。单晶和薄膜的材料制备与物理性能之间的协同反馈有望带来更高质量的材料，并对正常态和超导态的性质有新的见解。计划的测量包括：低温热和电传输、低温比热、单粒子隧道、拉曼散射和光学反射率、光电发射和穿透深度。所有的测量都将在零磁场下进行，以探测超导态，并在临界场以上的磁场中进行，以探测低温正常态。该项目为多学科研究领域的研究生和博士后研究助理提供了出色的培训。这将使他们接触到对工业和学术生涯有用的研究工具和想法。铜氧化物高温超导的起源是物理学中尚未解决的主要问题之一。对高T_c超导体的理解不仅可能影响基本的凝聚态物理，而且可能影响这些材料作为改进的电子器件和载流线的潜在应用。这一个人研究人员奖将资助一个以了解电子掺杂高T_c超导体为目标的项目。这些材料构成了所有高T_c铜氧化物的子集，但它们具有非常不寻常的性质，需要了解。本项目中提出的实验将在多学科研究领域为研究生提供极好的培训。它将使学生接触到在工业中将非常有用的研究工具和想法。