RUI: Probing Hidden Order and Magnetic Disorder in Correlated Electron Systems Using Spin Probes

这一个人研究人员奖将支持一个以本科生为主的机构的实验项目。该项目致力于研究相关电子材料中的本征非均匀结构，目的是阐明相变的性质，以及无序动力学在这些系统的行为中随着温度的降低而发挥的作用。我们将用磁共振和四极共振技术来表征相变系统中局部磁场和电场梯度分布的静态和动态特性。此外，将使用Muon自旋旋转技术来表征和评估无序动力学在显示与量子临界点一致的特征的系统基态中的作用。参与该项目的本科生和研究生将接受磁共振、射频电子学、低温技术和计算机与实验接口技术方面的培训。这项研究将与加州大学河滨分校、佛罗里达大学和荷兰的Kamerlingh Onnes实验室合作进行。这一个人研究人员奖将支持一个以本科生为主的机构的一个实验项目。该项目致力于增加我们对相关电子材料的理解。在这些系统中，电子相互作用很强，导致了与普通金属等更常见的非相互作用电子系统完全不同的行为。由于相关电子材料对温度和磁场的变化表现出各种各样的行为，因此目前是科学技术领域非常感兴趣的主题。这些材料可能表现出超导性、磁性、反铁磁性、小磁矩和四极有序、非费米液体行为、巨磁电阻或隐藏有序。核磁共振、四极共振和Muon自旋旋转技术将被用来研究重费米子系统等稀土和鳗系元素化合物中关联电子的静态和动态性质。重点是阐明相变的性质以及无序动力学在温度降低时这些系统的行为中所起的作用。参与该项目的本科生和研究生将接受磁共振、射频电子学、低温技术和计算机与实验接口技术方面的培训。这项研究将与加州大学河滨分校、佛罗里达大学和荷兰的Kamerlingh Onnes实验室合作进行。

This individual investigator award will support an experimental project at a predominately undergraduate institution. The project concentrates on the study of intrinsic inhomogeneous structures in correlated electron materials, with a goal of elucidating the nature of phase transitions and the role played by disordered dynamics in the behavior of these systems as the temperature is decreased. Static and dynamic properties of local magnetic-field and electric-field-gradient distributions in systems undergoing phase transitions will be characterized by means of magnetic- and quadrupolar-resonance techniques. In addition, muon spin rotation techniques will be used to characterize and assess the role of disordered dynamics in the ground state of systems displaying characteristics consistent with a quantum critical point. Undergraduate and graduate (masters level) students working on this project will receive training in the techniques of magnetic resonance, radio-frequency electronics, cryogenics, and interfacing computers with experiments. The research will be carried out in collaboration with The University of California, Riverside, The University of Florida, and the Kamerlingh Onnes Lab in the Netherlands.This individual investigator award will support an experimental project at a predominately undergraduate institution. The project concentrates on increasing our understanding of correlated electron materials. These are systems in which the electrons interact strongly with each other, resulting in a behavior completely different from that displayed by the more common non-interacting electron systems such as normal metals. Correlated electron materials are currently the subject of great deal of interest for science and technology due to the wide variety of behaviors they display in response to changes in temperature and magnetic field. These materials may exhibit superconductivity, magnetism, antiferromagnetism, small-moment and quadrupolar ordering, non-Fermi liquid behavior, colossal magnetoresistance or hidden order. Nuclear-magnetic and quadrupolar-resonance and muon spin rotation techniques will be used to study the static and dynamic properties of correlated-electrons in rare-earth and actinide compounds such as heavy-fermion systems. The emphasis is on elucidating the nature of phase transitions and the role played by disordered dynamics in the behavior of these systems as the temperature is decreased. Undergraduate and graduate (masters level) students working on this project will receive training in the techniques of magnetic resonance, radio-frequency electronics, cryogenics, and interfacing computers with experiments. The research will be carried out in collaboration with The University of California, Riverside, The University of Florida, and the Kamerlingh Onnes Lab in the Netherlands.