CAREER: Current-Induced Effects in Magnetic Nanostructures and Development of Science Education

****非技术摘要****持续的技术发展取决于对纳米级系统特有现象的先进理解，以及利用纳米器件应用这些现象的能力。西弗吉尼亚大学教师早期职业发展项目的目标是探索纳米级磁性器件中的新物理现象。与传统的半导体设备相比，这种设备有望实现更高的速度和更小的功耗。纳米磁性器件的功能与其磁性结构的变化有关，这可以通过电流通过器件有效地实现。本计画的目标是建立奈米磁装置中电流感应现象的范围。该项目将研究使用具有复杂磁性质的先进磁性材料是否可以提高电流操纵磁性纳米器件的效率。此外，还将探索磁性器件中新的电流感应效应，扩大通过施加电流可实现的配置范围。该项目的研究目标将由一个全面的纳米科学教育计划来补充，其中包括一个中学生科学营，以及在西弗吉尼亚纳米科学辅修课程的框架下开发纳米物理课程。****技术摘要****未来的技术发展依赖于对纳米级系统特有现象的先进理解，以及利用纳米器件应用这些现象的能力。磁性纳米器件有望取代传统的半导体器件。它们的结构可以通过自旋极化电流来控制，该电流可以通过极化电子施加的自旋传递扭矩来旋转磁矩。西弗吉尼亚大学教师早期职业发展项目的目标是探索纳米磁性器件中新的电流诱导现象，从而使电流对磁性器件的操作更有效。该项目将解决通过自旋转移扩大操纵范围的可能性，包括反铁磁体在内的复杂磁系统，以及通常自旋扭矩变得低效的磁构型。该项目的研究目标将由一个全面的纳米科学教育计划来补充，其中包括一个中学生科学营，以及在西弗吉尼亚纳米科学辅修课程的框架下开发纳米物理课程。

****NON-TECHNICAL ABSTRACT****Continued technological development depends on the advanced understanding of phenomena specific to nanoscale systems, and the ability to harness the phenomena for application in nanodevices. The goal of this Faculty Early Career Development project at West Virginia University is to explore new physical phenomena in nanoscale magnetic devices. Such devices promise higher speed and smaller power consumption compared to the conventional semiconductor devices. The functionality of nanomagnetic devices is associated with changes of their magnetic configuration, which can be efficiently achieved by passing an electrical current through the device. The goal of this project is to establish the scope of current-induced phenomena in nanomagnetic devices. The project will investigate whether using advanced magnetic materials with complex magnetic properties can enhance the efficiency of manipulation of magnetic nanodevices by electrical current. Additionally, new current-induced effects in magnetic devices will be probed, expanding the range of configurations achievable by applying an electrical current. The research goals of the project will be complemented by a comprehensive nanoscience education program, which includes a science camp for middle school students and development of a nanoscale physics course in the framework of the nanoscience minor at WVU.****TECHNICAL ABSTRACT****Future technological development relies on the advanced understanding of phenomena specific to nanoscale systems, and the ability to harness the phenomena for application in nanodevices. Magnetic nanodevices are a promising replacement for the conventional semiconductor devices. Their configuration can be manipulated by spin polarized electrical currents, which can rotate the magnetic moments via the spin transfer torque exerted by polarized electrons. The goal of this Faculty Early Career Development project at West Virginia University is to explore new current-induced phenomena in nanomagnetic devices that can make the manipulation of magnetic devices by current more efficient. The project will address the possibility of expanding the scope of manipulation by spin transfer to complex magnetic systems including antiferromagnets, and to magnetic configurations in which the usual spin torque becomes inefficient. The research goals of the project will be complemented by a comprehensive nanoscience education program, which includes a science camp for middle school students and development of a nanoscale physics course in the framework of the nanoscience minor at WVU.