CAREER: Quantum Critical Dynamics in Magnetic Systems

该职业奖授予明尼苏达大学的一名年轻教员，将建立一个研究项目，研究量子临界点附近磁系统的自旋动力学。该项目将开发和实现一种混合磁光技术，用于探测磁相变附近的实时自旋动力学。在10 - 1000皮秒的时间尺度上的弛豫将被探测，提供关于自旋动力学的信息，补充传统的技术，如中子散射。这个项目是跨学科的，借鉴了磁学和半导体物理学的思想。与这项研究相结合的是一项教育计划，以加强跨学科的方法，如在这项工作中使用的方法，将在明尼苏达大学建立一个新的科学交流项目，作为高级实验方法课程的一部分。将开发一套用于提高书面和口头交流的资源，使物理专业的学生能够从他们的导师、同学和大学在线写作中心的教学支持人员那里获得反馈。该职业奖授予明尼苏达大学的一名年轻教员，该教员将建立一个研究项目，研究磁性材料的快速过程。这些进程用于向计算机硬盘读取和写入信息。一种新的探针将被开发出来，它将能够检查在时间尺度上发生的过程，其速度比台式PC微处理器的500兆赫操作速度快200倍。该项目将采用一种从半导体实验中改编而来的脉冲激光技术。这是科学家如何从不同学科的交流中受益的一个例子。该项目的教育计划是改善科学家之间以及与公众交流的方式。明尼苏达大学的物理专业课程将采用新的书面和口头交流教学方法。我们将开发一个新的框架，用于指导教师和同行的反馈，最终目标是将这些技术转移到更大的介绍性实验课程论坛上。

This CAREER award to a young faculty member at the University of Minnesota will establish a research program to study the spin dynamics of magnetic systems near quantum critical points. This project will develop and implement a hybrid magneto-optical technique for probing real-time spin dynamics near magnetic phase transitions. Relaxation on time scales of order 10 - 1000 picoseconds will be probed, providing information about spin dynamics that complements traditional techniques such as neutron scattering. The project is interdisciplinary, drawing on ideas from magnetism and semiconductor physics. Integrated with this research is an educational plan to enhance interdisciplinary approaches such as that used in this work, a new program in scientific communication will be established as part of an upper-level experimental methods course at the University of Minnesota. A set of resources for improving both written and oral communication will be developed, allowing physics students to receive feedback from their instructors, peers, and teaching support personnel in the University's Online Writing Center.This CAREER award to a young faculty member at the University of Minnesota will establish a research program to study very fast processes in magnetic materials. Such processes are used for reading and writing information to computer hard disks. A new probe will be developed that will be capable of examining processes that occur on time scales up to 200 times faster than the 500 MHz operating speed of a desktop PC microprocessor. The project will employ a pulsed laser technique that is adapted from experiments on semiconductors. This is an example of how scientists benefit from communication across different disciplines. The educational plan of this project is to improve the way that scientists communicate with each other as well as with the general public. New techniques for teaching written and oral communication will be implemented in physics major courses at the University of Minnesota. A new framework for feedback from instructors and peers will be developed with the ultimate goal of transferring these techniques to the larger forum of introductory laboratory courses.