Theory of the electronic and magnetic structure of advanced spintronic materials

先进自旋电子材料的电子和磁结构理论

• 批准号: 172519237
• 负责人: Dr. Stanislav Chadov
• 金额: --
• 依托单位: Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS)
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/172519237?language=en
• 关键词: Theory; electronic; magnetic; structure; advanced

This project develops and applies theoretical methods to investigate the electronic structure of advanced spintronic materials and calculates their relevant physical properties that are based on the band structure and density of states that are magnetic moments, Curie temperatures, phonon spectra, exchange coupling and magnetic anisotropies including reorientation transitions, magnon spectra, specific heat, conductivity, magnetoresistance, optical, photoemission and photoabsorption spectra. Extensions of LSDA to include dynamical correlations will be of importance to explain the results of all experimental groups working with spectroscopic methods. Stepwise, the methods will be improved and applied to the materials investigated by ASPIMATT. Attention will be paid on the design of new semiconducting as well as tetragonal materials with high Z atoms (e.g.: Mn2xYGa, Y=Fe, Pt) exhibiting perpendicular anisotropy for CPP-GMR and other devices for spintransport. Special emphasis will be given on interfaces, spin dependent transport phenomena, spectroscopic properties and photoemission.

该项目开发和应用理论方法来研究先进自旋电子材料的电子结构，并计算其相关的物理特性，这些物理特性基于能带结构和态密度，即磁矩，居里温度，声子谱，交换耦合和磁各向异性，包括重取向跃迁，磁振子谱，比热，电导率，磁阻，光学，光发射和光吸收光谱。扩展的LSDA，包括动力学的相关性将是重要的，以解释所有的实验组与光谱方法的工作结果。逐步地，这些方法将得到改进并应用于ASPIMATT研究的材料。重点将放在设计新的半导体以及具有高Z原子的四元材料上（例如：Mn 2xYGa，Y=Fe，Pt），其对于CPP-GMR和用于自旋输运的其它器件表现出垂直各向异性。特别强调的是界面，自旋相关的输运现象，光谱特性和光电效应。