CAREER: Photoemission Spectroscopy of Thin Films : A New Laboratory for Studying Quantum Many-Body Interactions

职业：薄膜光电发射光谱：研究量子多体相互作用的新实验室

• 批准号: 0847385
• 负责人: Kyle Shen
• 金额: $ 53万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0847385&HistoricalAwards=false
• 关键词: CAREER; Photoemission; Spectroscopy; Thin; Films

NON-TECHNICAL ABSTRACT :This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The research funded by this CAREER award will probe exotic states of matter in artificially engineered materials. In particular, this project will investigate the quantum interactions and mechanisms which give rise to the unique properties of these materials, which include superconductivity, magnetoresistance, and phase changes. These properties have enormous utility in energy delivery and electronic applications, although this potential remains largely untapped. This is due to the current lack of understanding of the microscopic mechanisms governing these properties, something that this CAREER project will directly address. Recognizing the importance of these materials in energy-related applications, the educational component of this CAREER award will emphasize the importance of materials physics in energy storage, conversion, and transport. Education and research will be tightly integrated at the undergraduate level through research projects through the REU program as well as by Cornell undergraduates. In addition, a freshman-level module emphasizing the physics of power generation and conversion will be developed. This award will also support an outreach program centered on developing an exhibit on energy and materials for the public at the Ithaca Sciencenter. This award is supported by the Division of Materials Research and the Division of Physics. TECHNICAL ABSTRACT : This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The research funded by this CAREER award will probe exotic states of matter in artificially engineered materials. In particular, this project will utilize angle-resolved photoemission spectroscopy (ARPES) to study quantum many-body interactions in epitaxial thin films of correlated quantum materials grown by molecular beam epitaxy (MBE). These systems include the novel two-dimensional electron gas (2DEG) formed in oxide heterostructures (SrTiO3 / LaAlO3), superconductivity, colossal magnetoresistance in the manganites (La2MnO4), and metal-insulator transitions (EuO, V2O3). Utilizing MBE-synthesized materials will allow for the unique studies of heterostructures, nanostructures, and materials under the influence of epitaxial strain. The educational component of this CAREER award will emphasize the importance of such materials in energy storage, conversion, and transport applications. Education and research will be tightly integrated at the undergraduate level through research projects through the REU program as well as by Cornell undergraduates. In addition, a freshman-level module emphasizing the physics of power generation and conversion will be developed. This award will also support an outreach program centered on developing an exhibit on energy and materials for the public at the Ithaca Sciencenter. This award is supported by the Division of Materials Research and the Division of Physics.

摘要：该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。这项由CAREER奖资助的研究将探索人工工程材料中物质的奇异状态。特别是，该项目将研究量子相互作用和产生这些材料独特性质的机制，包括超导性、磁电阻和相变。这些特性在能源输送和电子应用方面有着巨大的效用，尽管这种潜力在很大程度上尚未开发。这是由于目前缺乏对控制这些特性的微观机制的理解，这是CAREER项目将直接解决的问题。认识到这些材料在能源相关应用中的重要性，该职业奖的教育部分将强调材料物理学在能源存储、转换和运输中的重要性。通过REU项目的研究项目以及康奈尔大学本科生的研究项目，教育和研究将在本科阶段紧密结合。此外，将开发强调发电和转换物理的新生级模块。该奖项还将支持在伊萨卡科学中心为公众举办能源和材料展览的推广项目。该奖项由材料研究部和物理部支持。技术摘要：该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。这项由CAREER奖资助的研究将探索人工工程材料中物质的奇异状态。特别是，本项目将利用角分辨光发射光谱（ARPES）研究分子束外延（MBE）生长的相关量子材料外延薄膜中的量子多体相互作用。这些体系包括在氧化物异质结构（SrTiO3 / LaAlO3）中形成的新型二维电子气体（2DEG）、超导性、锰酸盐（La2MnO4）中的巨磁电阻以及金属绝缘体转变（EuO, V2O3）。利用mbe合成的材料可以对异质结构、纳米结构和外延应变影响下的材料进行独特的研究。该职业奖的教育部分将强调此类材料在能源存储、转换和运输应用中的重要性。通过REU项目的研究项目以及康奈尔大学本科生的研究项目，教育和研究将在本科阶段紧密结合。此外，将开发强调发电和转换物理的新生级模块。该奖项还将支持在伊萨卡科学中心为公众举办能源和材料展览的推广项目。该奖项由材料研究部和物理部支持。