Boltzmann approach to coupled spin and heat transport in ferromagnets

铁磁体中耦合自旋和热传输的玻尔兹曼方法

• 批准号: 198246422
• 负责人: Professor Dr. Felix von Oppen, since 10/2016
• 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 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/198246422?language=en
• 关键词: Boltzmann; approach; coupled; spin; heat

The new research field of spin caloritronics bears the potential for interesting applications such as the realization of a spin battery while at the same time it raises many fundamental theoretical questions about the physics of heat, charge and spin currents. Here, we propose to consider spin thermoelectric phenomena in ferromagnetic metals with a particular focus on the contribution of the conduction electrons. We plan to set up a theory for the conduction electron contribution to the spin Seebeck effect including electron-electron interaction as well as inelastic scattering of phonons and magnons. These are interesting mechanisms, because they give rise to spin Coulomb drag as well as phonon and magnon drag. We will also consider systems with intrinsic spin orbit interaction where transverse thermoelectric effects exist such as the spin Nernst effect. In addition to two- and three-dimensional ferromagnets we plan to develop a thorough understanding of the spin-resolved kinetics of quantum wires. We expect unusual spin thermoelectric effects in one dimension due to the dominance of threebody collisions.

自旋热电子学这一新的研究领域具有潜在的有趣应用，如实现自旋电池，同时它提出了许多关于热，电荷和自旋电流物理学的基本理论问题。在这里，我们建议考虑自旋热电现象的铁磁金属，特别注重导电电子的贡献。我们计划建立一个包括电子-电子相互作用以及声子和磁振子的非弹性散射的传导电子对自旋Seebeck效应的贡献的理论。这些都是有趣的机制，因为它们产生自旋库仑阻力以及声子和磁振子阻力。我们还将考虑具有内在自旋轨道相互作用的系统，其中存在横向热电效应，如自旋能斯特效应。除了二维和三维铁磁体，我们计划发展一个彻底的理解量子线的自旋分辨动力学。由于三体碰撞的优势，我们预计在一维空间中会出现不寻常的自旋热电效应。

项目成果

Thermal spin torques in magnetic insulators

磁绝缘体中的热自旋转矩

• DOI: 10.1103/physrevb.95.104432
• 发表时间: 2017-03
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Haiming Yu;S. D. Brechet;P. Che;F. A. Vetro;M. Collet;S. Tu;Y. G. Zhang;Y. Zhang;T. Stueckler;L. Wang;H. Cui;D. Wang;C. Zhao;P. Bortolotti;A. Anane;J-Ph. Ansermet;W. Zhao
• 通讯作者: W. Zhao

Field-dependent thermal conductivity and Lorenz number in Co/Cu multilayers

• DOI: 10.1103/physrevb.87.134406
• 发表时间: 2013-04
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: J. Kimling;K. Nielsch;K. Rott;G. Reiss

Topological magnon insulators: Chern numbers and surface magnons

• DOI: 10.1117/12.2235847
• 发表时间: 2016-09
• 作者: A. Mook;J. Henk;I. Mertig

Giant spin Nernst effect induced by resonant scattering at surfaces of metallic films

• DOI: 10.1103/physrevb.93.180406
• 发表时间: 2016-03
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: N. H. Long;P. Mavropoulos;B. Zimmermann;S. Blugel;Y. Mokrousov

Magnonic domain wall heat conductance in ferromagnetic wires.

• DOI: 10.1103/physrevlett.109.087202
• 发表时间: 2012-04
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: P. Yan;G. Bauer