CAREER: Theoretical Approach to Dirac and Related Critical Materials

职业：狄拉克和相关关键材料的理论方法

• 批准号: 0955561
• 负责人: Oskar Vafek
• 金额: $ 42万
• 依托单位: Florida State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-07-01 至 2015-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0955561&HistoricalAwards=false
• 关键词: CAREER; Theoretical; Approach; Dirac; Related

TECHNICAL SUMMARY This CAREER award supports integrated research, education, and outreach activities in theoretical condensed matter physics. The research focuses on materials which exhibit Dirac, or related, criticality. The research has three thrusts: 1.) explore the effects of temperature, the electron-electron interaction, and disorder on the transport scaling functions of systems where low-energy excitations behave as massless Dirac fermions; 2.) examine the effects of interaction and temperature on the electronic ordering of Dirac and related materials, both near weak and strong coupling instabilities; 3.) explore the physics of materials where Dirac fermions arise due to an onset of many-body ordering and understand their coupling to magnetic fields and to collective excitations near phase transitions. The educational component of this proposal involves developing new wiki-based learning tools at both the undergraduate and graduate levels. The PI will utilize collaborative wiki-textbook writing as a tool for building a firm knowledge structure and for reinforcing students' conceptual grasp of the subject. At the completion of the teaching component of the proposal, the PI plans to publish the findings in a pedagogical press, expecting that this interactive learning model will have impact across academia. Education and outreach efforts will be linked to the Florida State University--National High Magnetic Field Laboratory Center for Integrated Research and Learning. The PI will develop a wiki-component for the SuperNet, an educational network connecting scientists and teachers with a shared purpose of getting students interested in and excited about science. The goal of the network is to establish new learning communities of scientists, teachers, and students who jointly explore physics through inquiry-based, hands-on activities. NON-TECHNICAL SUMMARY This CAREER award supports integrated research, education, and outreach activities in fundamental theoretical condensed matter physics. In nature, there appear to be no known elementary particles that are charged and massless. Photons, the quanta of light for example, are massless particles, but they have no electric charge. Recently, condensed matter physicists have uncovered a special class of materials whose charge carrying excitations behave as if they are massless particles. The electronic excitations in a two-dimensional, single atom thick sheet of carbon, known as graphene, behave like massless particles. Through the remarkable physics and chemistry of materials, the properties of massless and charged particles can be explored. These materials may be useful for future electronics device applications due to the properties of these intriguing particles. The PI aims to develop and use advanced theoretical techniques to further unlock the mysteries of graphene and to further understand the consequences of the unusual behavior of electrons in this and related materials. The educational component of this proposal involves developing new wiki-based learning tools at both the undergraduate and graduate levels. The PI will utilize collaborative wiki-textbook writing as a tool for building a firm knowledge structures and for reinforcing students' conceptual grasp of the subject. At the completion of the teaching component of the proposal, the PI plans to publish the findings in a pedagogical press, expecting that this interactive learning model will have impact across academia. Education and outreach efforts will be linked to the Florida State University--National High Magnetic Field Laboratory Center for Integrated Research and Learning. The PI will develop a wiki-component for the SuperNet, an educational network connecting scientists and teachers with a shared purpose of getting students interested in and excited about science. The goal of the network is to establish new learning communities of scientists, teachers, and students who jointly explore physics through inquiry-based, hands-on activities.

该职业奖支持理论凝聚态物理学的综合研究，教育和推广活动。研究重点是显示狄拉克或相关临界性的材料。本研究有三个重点：（1）。探索温度、电子-电子相互作用和无序对系统输运标度函数的影响，其中低能激发表现为无质量狄拉克费米子; 2.）研究相互作用和温度对狄拉克和相关材料的电子有序性的影响，包括弱耦合和强耦合不稳定性; 3.）探索材料的物理学，其中狄拉克费米子由于多体有序的开始而出现，并了解它们与磁场的耦合以及相变附近的集体激发。这项建议的教育部分涉及在本科生和研究生两级开发新的基于维基的学习工具。PI将利用协作维基教科书写作作为建立稳固的知识结构和加强学生对该主题的概念把握的工具。在完成该提案的教学部分时，PI计划在教学出版社上发表研究结果，期望这种互动学习模式将在学术界产生影响。教育和推广工作将与佛罗里达州立大学-国家高磁场实验室综合研究和学习中心联系起来。PI将为SuperNet开发一个维基组件，SuperNet是一个连接科学家和教师的教育网络，其共同目的是让学生对科学感兴趣并对科学感到兴奋。该网络的目标是建立科学家，教师和学生的新学习社区，他们通过基于探究的实践活动共同探索物理学。非技术性摘要该职业奖支持基础理论凝聚态物理学的综合研究，教育和推广活动。在自然界中，似乎没有已知的基本粒子是带电的和无质量的。光子，例如光的量子，是无质量的粒子，但它们没有电荷。最近，凝聚态物理学家发现了一类特殊的材料，它们的电荷携带激发行为就像它们是无质量的粒子。二维单原子厚的碳片（称为石墨烯）中的电子激发表现得像无质量粒子。通过材料的物理和化学，可以探索无质量和带电粒子的性质。由于这些有趣的粒子的性质，这些材料可能对未来的电子器件应用有用。PI的目标是开发和使用先进的理论技术，以进一步解开石墨烯的奥秘，并进一步了解电子在这种材料和相关材料中的不寻常行为的后果。这项建议的教育部分涉及在本科生和研究生两级开发新的基于维基的学习工具。PI将利用协作维基教科书写作作为建立稳固的知识结构和加强学生对该主题的概念把握的工具。在完成该提案的教学部分时，PI计划在教学出版社上发表研究结果，期望这种互动学习模式将在学术界产生影响。教育和推广工作将与佛罗里达州立大学-国家高磁场实验室综合研究和学习中心联系起来。PI将为SuperNet开发一个维基组件，SuperNet是一个连接科学家和教师的教育网络，其共同目的是让学生对科学感兴趣并对科学感到兴奋。该网络的目标是建立科学家，教师和学生的新学习社区，他们通过基于探究的实践活动共同探索物理学。