Manipulation and detection of magnetic states with collinear spin-split antiferromagnets

利用共线自旋分裂反铁磁体操纵和检测磁态

• 批准号: 490730630
• 负责人: Professor Dr. Sebastian Gönnenwein
• 金额: --
• 依托单位: Arbeitsgruppe Magnetische Materialien und Spintronik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/490730630?language=en
• 关键词: Manipulation; detection; magnetic; states; collinear

We will experimentally demonstrate that a new class of antiferromagnets with spin-split electronic energy bands and vanishing magnetization can complement or replace ferromagnets in the detection and manipulation of magnetic states in spintronic devices. The project is based on our recent discovery of strongly polarized conserved spin-currents generated by these spin-split collinear antiferromagnets. We will demonstrate that our antiferromagnets can facilitate the prominent spintronic functionalities which were earlier thought to be exclusive merits of ferromagnets. Simultaneously, the introduction of antiferromagnets will increase robustness and decrease multilayer-material complexity of the devices. We will also show that semimetallic of semiconducting spin-split antiferromagnets open a prospect of efficient thermo-electric energy harvesting and magnetic imaging. Our international team has a previous track record of successful collaborations and the complementary expertise within the team ideally matches the objectives of the project. The aim of the project is the demonstration of electrical and thermoelectric manipulation and detection of magnetic states by spin transfer torque and giant magnetoresistance using collinear spin-split antiferromagnets and the imaging of antiferromagnetic domains by the anomalous Nernst effect.

我们将在实验上证明，具有自旋分解电子能带和消失磁化的新的抗铁磁铁可以补充或替换在旋转器件中磁性磁状态的检测和操纵中，可以补充或替换铁磁体。该项目基于我们最近发现由这些自旋切割界线抗fiferromagnet产生的强极化的保守旋转 - 旋转。我们将证明我们的抗铁磁铁可以促进突出的自旋功能，这些功能早些时候被认为是铁磁体的独特优点。同时，抗铁磁体的引入将增加稳健性并降低设备的多层物质复杂性。我们还将表明，半导体自旋分裂的抗铁磁铁的半金属为有效的热电学收获和磁成像开辟了前景。我们的国际团队以前有成功合作的记录，并且团队中的补充专业知识理想地符合该项目的目标。该项目的目的是通过使用共线自旋式抗fiferromagnets进行自旋转移扭矩和巨型磁磁来证明电气和热电操作，并通过自旋转移扭矩和巨型磁性稳定，并通过异常的NernST效应对抗磁磁性结构域进行成像。