Manipulating thermal transport using the spin moment

利用自旋矩操纵热传输

• 批准号: 198551693
• 负责人: Professor Dr. Gerhard Jakob
• 金额: --
• 依托单位: Institut für Physik
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/198551693?language=en
• 关键词: Manipulating; thermal; transport; using; spin

We want to show how the electron spin can be used to modify the heat conductivity in spin caloritronic devices and materials. In the field of spintronics most materials are used as thin film systems or as complex heterostructures. While the electrical transport is well investigated in such systems, the corresponding transport of energy in form of heat is scarcely considered up to now. Though it will be essential for a number of topics in the priority programme as thermal spin transfer switching or projects related to the spin Seebeck effect. This lack of knowledge stems mainly from the difficulties in measuring the heat conductivity in a thin film geometry perpendicular to the layers. Using a 3w method one can get access to this physical property. We want to use our recently set up measurement system, in order to measure and manipulate the heat conductivity of thin film systems prepared in other projects within the priority programme and on model systems prepared within this project. A second part of the project will be dedicated to the Spin Seebeck effect. Using the same materials we will investigate this recently discovered effect, where the spin is manipulated by the heat current.

我们想展示如何利用电子自旋来改变自旋热电子器件和材料的热导率。在自旋电子学领域，大多数材料被用作薄膜系统或复杂的异质结构。虽然电输运在这样的系统中得到了很好的研究，但到目前为止，几乎没有考虑以热的形式的能量的相应输运。尽管它对于优先计划中的一些主题是必不可少的，如热自旋转移开关或与自旋塞贝克效应有关的项目。这种知识的缺乏主要源于测量垂直于层的薄膜几何形状中的热导率的困难。使用3w方法可以访问此物理属性。我们希望使用我们最近建立的测量系统，以测量和操纵在优先计划内的其他项目中制备的薄膜系统和在该项目中制备的模型系统的热导率。该项目的第二部分将致力于自旋塞贝克效应。使用相同的材料，我们将研究这种最近发现的效应，其中自旋是由热流操纵的。