CAREER: New Physical Phenomena in Ruthenate Materials

职业：钌酸盐材料的新物理现象

• 批准号: 0645305
• 负责人: Zhiqiang Mao
• 金额: $ 41万
• 依托单位: Tulane University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-06-01 至 2012-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0645305&HistoricalAwards=false
• 关键词: CAREER; New; Physical; Phenomena; Ruthenate

Non-Technical Abstract:Strongly correlated oxides exhibit exciting and technologically useful properties: examples include high temperature superconductivity and colossal magnetoresistance. Recently, ruthenates became a new focus within this field since they exhibit diverse and fascinating physical properties, such as unconventional forms of superconductivity and magnetic ordering. One of the most remarkable characteristics of ruthenates is that their properties can be tuned with external stimuli such as magnetic field, chemical composition, or pressure, which offers a unique opportunity to study the physics of novel quantum phases. The goal of this Faculty Early Career Development (CAREER) project at Tulane University is to search for novel quantum phenomena in ruthenate materials and investigate their underlying physics. Understanding of novel physical phenomena in ruthenates is not only important for the development of the basic science of materials, but also has potential consequences for applications of correlated electronic materials. This project will be integrated with educational activities. A new course in materials science will be developed for Tulane Interdisciplinary Experiences program, which provides incoming freshmen students with an environment for interdisciplinary learning. Both graduate and undergraduate students will be involved in the research of this project. In addition, this project will also provide research opportunities to minority students.Technical Abstract:Strongly correlated oxides exhibit exciting and technologically useful properties: examples include high temperature superconductivity and colossal magnetoresistance. Recently, ruthenates became a new focus within this field since they exhibit fascinating ordered ground states. Spin-triplet superconductivity, metamagnetic quantum criticality, itinerant ferromagnetism, and antiferromagnetic Mott insulating behavior have all been found in close proximity to one another. These diverse and tunable ground states offer a unique opportunity to study the physics of novel quantum phases. The goal of this Faculty Early Career Development (CAREER) project at Tulane University is to search for novel quantum phenomena in ruthenate materials and investigate their underlying physics. The specific research plan includes studies of novel quantum phase transitions, metamagnetism, bulk spin valve behavior, and orbital-related physics. Understanding of these phenomena in ruthenates is not only important for the development of the basic science of materials, but also has potential consequences for applications of correlated electronic materials. This project will be integrated with educational activities. A new course in materials science will be developed for Tulane Interdisciplinary Experiences program, which provides incoming freshmen students with an environment for interdisciplinary learning. Both graduate and undergraduate students will be involved in the research of this project. In addition, this project will also provide research opportunities to minority students.

非技术摘要：强相关氧化物显示出令人兴奋的和技术上有用的性质：例如高温超导和巨磁电阻。近年来，Ruthenate成为该领域的一个新的研究热点，因为它们表现出各种迷人的物理性质，如非传统形式的超导电性和磁性有序。Ruthenate最显著的特点之一是其性质可以通过磁场、化学成分或压力等外部刺激来调节，这为研究新型量子相的物理提供了独特的机会。杜兰大学这个教职早期职业发展项目的目标是在Ruthenate材料中寻找新的量子现象，并研究其潜在的物理现象。理解新的物理现象不仅对材料基础科学的发展具有重要意义，而且对相关电子材料的应用也具有潜在的意义。该项目将与教育活动相结合。将为杜兰大学跨学科体验项目开发一门新的材料科学课程，为新生提供跨学科学习的环境。研究生和本科生都将参与这个项目的研究。此外，该项目还将为少数族裔学生提供研究机会。技术摘要：强关联氧化物显示出令人兴奋的和技术上有用的性质：例如高温超导和巨磁电阻。近年来，由于Ruthenate呈现出令人着迷的有序基态，成为该领域研究的新热点。自旋三重态超导电性、超磁量子临界性、巡回铁磁性和反铁磁性Mott绝缘行为都被发现在彼此附近。这些多种多样且可调的基态为研究新的量子相的物理提供了一个独特的机会。杜兰大学这个教职早期职业发展项目的目标是在Ruthenate材料中寻找新的量子现象，并研究其潜在的物理现象。具体的研究计划包括研究新的量子相变、超磁性、体自旋阀行为和与轨道相关的物理。这些现象的理解不仅对材料基础科学的发展具有重要意义，而且对相关电子材料的应用也具有潜在的意义。该项目将与教育活动相结合。将为杜兰大学跨学科体验项目开发一门新的材料科学课程，为新生提供跨学科学习的环境。研究生和本科生都将参与这个项目的研究。此外，该项目还将为少数民族学生提供研究机会。