Transversal transport properties and electron-magnon interaction: An ab initio description

横向传输特性和电子-磁振子相互作用：从头开始描述

• 批准号: 197928803
• 负责人: Professor Dr. Arthur Ernst
• 金额: --
• 依托单位: Institut für Theoretische 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 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/197928803?language=en
• 关键词: Transversal; transport; properties; electron; magnon

The aim of the project is the investigation the magneto-Seebeck effect which is the change of the thermopower of a molecular junction or a planar junction consisting of two ferro-magnetic leads separated by either a molecule or a metallic spacer layer. The idea is that the electronic structure of the molecule or the metallic spacer layer can be manipulated by the relative orientation of the lead magnetization. The expected effect is a sign change of the Seebeck coefficient which would mean that the direction of the heat current could be manipulated by an external magnetic field. The effect will be investigated by ab initio elec-tronic structure calculations based on density functional theory. The transport properties are calculated in the coherent limit based on Landauer theory or in the diffusive limit based on the Boltzmann equation taking into account damping by electron-magnon interaction.

该项目的目的是调查磁性测分效果，它是分子连接的热电器的变化或由两个由分子或金属间隔层分隔的铁磁性铅组成的平面连接。这个想法是，可以通过铅磁化的相对取向来操纵分子或金属间隔层的电子结构。预期的效果是塞贝克系数的符号变化，这意味着可以通过外部磁场来操纵热电流的方向。该效果将通过基于密度函数理论的Ab Inal Ele-Elec-tronic结构计算进行研究。基于Landauer理论或基于电子 - 马格诺相互作用阻尼的Boltzmann方程，基于Landauer理论或扩散极限以相干限制计算运输属性。