Investigating the effects of antiferromagnetic order upon Tc in superconducting spintronic devices

研究反铁磁序对超导自旋电子器件中 Tc 的影响

• 批准号: 1796341
• 金额: --
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2016
• 资助国家: 英国
• 起止时间: 2016 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1796341
• 关键词: Investigating; effects; antiferromagnetic; order; upon

As a member of the Device Materials Group in the department of Materials Science and Metallurgy, my research will be conducted in the newly emerging field of superconducting spintronics. The existence of spin-triplet Cooper pairs at the interfaces of magnetic and superconducting systems and their ability to be spin-polarized has recently been discovered. It is hoped that long-range spin-polarized supercurrents may be used in spintronics as an alternative to the highly dissipative spin-polarized currents seen in current spintronic applications, and potentially as a replacement for traditional transistor-based silicon electronics in the long term. This will require significant investigation and development of devices that allow the manipulation and control of the spin, magnetic and superconducting states in a system. Initially, my research will focus on the growth of epitaxial thin-film antiferromagnets with differing surface-spin structures. I will then attempt to construct devices consisting of antiferromagnetic and superconducting layers in order to investigate the phenomena that emerge at the interface between these two types of material, and particularly to probe how the critical temperature of the superconductor changes when in contact with the various antiferromagnetic surfaces, which would indicate some control over the superconducting state of the system."

作为材料科学和冶金系设备材料组的成员，我的研究将在新兴的超导Spintronics领域进行。最近发现了在磁性和超导系统的界面上存在自旋三曲，库珀对的存在及其被自旋偏振的能力。希望可以在Spintronics中使用远距离自旋的超级电流，以替代当前Spintronic应用中高度耗散的自旋极化电流，并有可能用作长期传统的基于晶体管的硅电子电子的替代。这将需要对设备进行大量研究和开发，以使系统中的自旋，磁性和超导状态进行操纵和控制。最初，我的研究将集中于具有不同表面旋转结构的外延薄膜抗铁磁铁的生长。然后，我将尝试构建由抗铁磁和超导层组成的设备，以研究这两种材料之间界面出现的现象，尤其是在与各种抗磁力磁性接触时，超导体的临界温度如何变化表面，这将表明对系统的超导状态的某些控制。”

项目成果

Superconducting Proximity Effects and Josephson Coupling in CoFeB Structures

CoFeB 结构中的超导邻近效应和约瑟夫森耦合

• DOI: 10.17863/cam.77978
• 发表时间: 2021
• 作者: Thompson J