CAREER: Correlation, Coherence, and Disorder in Nanoscale Devices and Complex Materials

该奖项将低维系统的电子特性研究与面向大学生和更广泛社区的教育活动结合起来。这些研究项目涉及到当电子被紧紧地限制在一个或多个方向上，以至于它们在这些方向上的运动被量子化时出现的新现象。这种限制既可以在人工纳米结构中实现，如量子点，也可以在复杂材料中实现，如碳纳米管和铜超导体。研究将集中在三个方面。第一个研究领域涉及小“人工原子”量子点和单分子器件中的强电子相互作用。首席研究员（PI）将研究量子点系统中多重耦合自旋和电荷自由度的相互作用影响，以及分子器件中强电子-振动耦合的出现。第二个研究领域是二维无序量子相变。PI计划研究稀量子反铁磁体和渗透超导体中的量子效应。这些项目与PI在超导体-绝缘体跃迁和量子霍尔跃迁方面的持续工作有关。第三个研究领域是库珀对、自旋和激子的量子相干性。PI将研究强相互作用电子系统（如超导器件和激子气体）中相干行为的有效限制。这些研究方向有望在不久的将来对技术产生影响。量子点已经在生物分子的光学标记和分子器件等应用中商业化，并提供了一种绕过硅电子器件尺寸限制的可能途径。量子相变在凝聚态物质理论中具有重要的基础意义，在技术上具有重要意义的材料中也经常发生。像SQUID这样的量子相干电子设备已经用于功能性核磁共振成像等应用。该职业建议的教育部分包括课程开发，大学内研究生和本科生的监督，以及向高中学生和大学外的其他人的推广。教育方面的倡议包括为研究生开设一个新的期刊俱乐部，提供与纳米科学和纳米技术相关的新课程材料，以及关于这一令人兴奋的基础物理学领域的公开讲座。该职业奖将低维系统的电子特性研究与面向大学生和更广泛社区的教育活动结合起来。这些研究项目涉及到当电子被紧紧地限制在一个或多个方向上，以至于它们在这些方向上的运动被量子化时出现的新现象。这种限制既可以在人工纳米结构中实现，如量子点，也可以在复杂材料中实现，如碳纳米管和铜超导体。研究将集中在三个方面。第一个研究领域涉及小“人工原子”量子点和单分子器件中的强电子相互作用。首席研究员（PI）将研究量子点系统中多重耦合自旋和电荷自由度的相互作用影响，以及分子器件中强电子-振动耦合的出现。第二个研究领域是二维无序量子相变。PI计划研究稀量子反铁磁体和渗透超导体中的量子效应。这些项目与PI在超导体-绝缘体跃迁和量子霍尔跃迁方面的持续工作有关。第三个研究领域是库珀对、自旋和激子的量子相干性。PI将研究强相互作用电子系统（如超导器件和激子气体）中相干行为的有效限制。这些研究方向有望在不久的将来对技术产生影响。量子点已经在生物分子的光学标记和分子器件等应用中商业化，并提供了一种绕过硅电子器件尺寸限制的可能途径。量子相变在凝聚态物质理论中具有重要的基础意义，在技术上具有重要意义的材料中也经常发生。像SQUID这样的量子相干电子设备已经用于功能性核磁共振成像等应用。该职业建议的教育部分包括课程开发，大学内研究生和本科生的监督，以及向高中学生和大学外的其他人的推广。教育方面的举措包括为研究生开设一个新的期刊俱乐部，提供与纳米科学和纳米技术相关的新课程材料，以及关于这一令人兴奋的基础物理学领域的公开讲座

This CAREER award combines research on electronic properties of low-dimensional systems with educational activities for both university students and the wider community. The research projects involve new phenomena which emerge when electrons are so tightly confined in one or more directions that their motion in these directions is quantized. Such confinement is realized both in artificial nanostructures, such as quantum dots, and in complex materials, such as carbon nanotubes and cuprate superconductors. The research will focus on three areas. The first research area concerns the strong electronic interactions in small "artificial atom" quantum dots and in single-molecule devices. The principal investigator (PI) will study interaction effects on multiple coupled spin and charge degrees of freedom in quantum dot systems, and the appearance of strong electron-vibrational coupling in molecular devices. The second research area is quantum phase transitions with disorder in two dimensions. The PI plans to study diluted quantum antiferromagnets and quantum effects in percolative superconductors. These projects are related to the PI's continuing work on superconductor-insulator transitions and quantum Hall transitions. The third research area is the quantum coherence of Cooper pairs, spins, and excitons. The PI will study the effective limits on coherent behavior in strongly interacting electronic systems such as superconducting devices and exciton gases. These research directions are expected to have an impact on technology in the relatively near future. Quantum dots have already been commercialized in applications such as optical tagging of biomolecules, and molecular devices and offer a possible route around the size limitations of silicon electronics. Quantum phase transitions are of fundamental interest in theory of condensed matter and occur in technologically important materials. Quantum coherent electronic devices like the SQUID are already in use for applications such as functional MRI. The educational component of this CAREER proposal involves course development, graduate and undergraduate student supervision within the university, and outreach to high school students and others outside the university. Educational initiatives include a new journal club for graduate students, new course material related to nanoscience and nanotechnology, and public lectures on this exciting and fundamental field of physics.%%%This CAREER award combines research on electronic properties of low-dimensional systems with educational activities for both university students and the wider community. The research projects involve new phenomena which emerge when electrons are so tightly confined in one or more directions that their motion in these directions is quantized. Such confinement is realized both in artificial nanostructures, such as quantum dots, and in complex materials, such as carbon nanotubes and cuprate superconductors. The research will focus on three areas. The first research area concerns the strong electronic interactions in small "artificial atom" quantum dots and in single-molecule devices. The principal investigator (PI) will study interaction effects on multiple coupled spin and charge degrees of freedom in quantum dot systems, and the appearance of strong electron-vibrational coupling in molecular devices. The second research area is quantum phase transitions with disorder in two dimensions. The PI plans to study diluted quantum antiferromagnets and quantum effects in percolative superconductors. These projects are related to the PI's continuing work on superconductor-insulator transitions and quantum Hall transitions. The third research area is the quantum coherence of Cooper pairs, spins, and excitons. The PI will study the effective limits on coherent behavior in strongly interacting electronic systems such as superconducting devices and exciton gases. These research directions are expected to have an impact on technology in the relatively near future. Quantum dots have already been commercialized in applications such as optical tagging of biomolecules, and molecular devices and offer a possible route around the size limitations of silicon electronics. Quantum phase transitions are of fundamental interest in theory of condensed matter and occur in technologically important materials. Quantum coherent electronic devices like the SQUID are already in use for applications such as functional MRI. The educational component of this CAREER proposal involves course development, graduate and undergraduate student supervision within the university, and outreach to high school students and others outside the university. Educational initiatives include a new journal club for graduate students, new course material related to nanoscience and nanotechnology, and public lectures on this exciting and fundamental field of physics.***