Transport and magnetism in GaMnN nanowires

GaNN 纳米线中的输运和磁性

• 批准号: 5453627
• 负责人: Professor Dr. Laurens W. Molenkamp
• 金额: --
• 依托单位: Freiburger Materialforschungszentrum (FMF)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2005
• 资助国家: 德国
• 起止时间: 2004-12-31 至 2008-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5453627?language=en
• 关键词: Transport; magnetism; GaMnN; nanowires

The recent development of the capability to produce thin GaMnN wires in the Peidong Yang group at Berkeley offers a unique opportunity to study the nature of semiconductor ferromagnetism in one dimensional systems, an issue which is currently topical as the transportation of information in a spintronics based technology will occur via wires that will approach the 1D limit. We will therefore embark on fundamental characterization of GaMnN wires from both a transport and magnetic point of view. For transport characterization, high resolution lithographic techniques will be used to fashion contacts onto a single wire and measure the magnetoresistance and transport anisotropy properties. In parallel, direct magnetic measurements will be performed by SQUID on array of wires to determine the correlations between magnetic and transport properties. Ultimately, the two approaches will be merged, as nano-patterned Hall bars will be used as probes to measure the magnetic properties of a single GaMnN wire.

在伯克利的Peidong Yang Group中生产细木丝的能力的最新能力提供了一个独特的机会，可以在一维系统中研究半导体铁磁磁性的性质，这一问题目前是主题性的，因为基于Spintronics的技术将通过接近1D限制的电线进行信息。因此，我们将从传输和磁性的角度启动Gamnn电线的基本表征。为了进行运输表征，高分辨率光刻技术将用于将触点置于单线上，并测量磁势稳定和传输各向异性特性。同时，将通过鱿鱼在一系列电线上进行直接磁测量，以确定磁性和传输性能之间的相关性。最终，这两种方法将被合并，因为纳米图案的大厅条将用作测量单块木丝的磁性特性的探针。