FOR 1464: ASPIMATT: Advanced Spintronic Materials and Transport Phenomena

日德研究单位的目标是为未来的自旋电子学奠定基础，有可能补充和取代传统的cmos。具体的方法在于开发和表征在室温下应用的新的自旋电子材料，以及研究新的自旋输运现象，特别是横向自旋电流现象。研究课题位于纳米电子学领域，特别是纳米自旋电子学及相关材料和结构的研究领域。尽管来自市场方面的压力很大，但自旋电子学领域的许多问题仍然缺乏很好的解决方案。半金属Heusler化合物的概念为新的解决方案提供了一个前景。Heusler化合物可以设计和制造具有高自旋极化和高居里温度，以及根据应用，高自旋注入效率，非常低或很高的阻尼，可调磁矩(可实现低磁矩和高磁矩)和可调各向异性。因此，当今3D金属系统中存在的许多与材料相关的问题都有很大的潜力可以克服。一个巨大的挑战仍然是如何处理界面的化学成分(原子扩散和粗糙度)、电子成分(例如肖特基势垒设计)和自旋性质(自旋注入和自旋泵浦)。此外，Heusler化合物家族中的新材料存在着潜在的新现象和应用，在这里命名为用作非铁磁自旋导体的新型半导体Heusler化合物。为了实现这一雄心勃勃的目标，所需的全面经验和专业知识不仅局限于一个地方，甚至不局限于一个国家，因此来自两所德国大学美因茨大学和凯泽斯劳滕技术大学的小组将他们的专业知识与日本仙台东北大学的小组结合起来。我们认为，我们在理解和制造豪斯勒化合物方面拥有独特的工作专长，是全球该领域唯一的联合体，涵盖了从基于计算机的设计到实际设备中的应用的所有范围。

The aim of the Japanese-German Research Unit is to develop the foundations for a future spintronics with the potential to complement and succeed conventional CMOS. The specific approach lies on the development and characterisation of new spintronic materials for applications at room temperature and on the study of new spin transport phenomena, in particular lateral spin current phenomena. The research subject lies in the field of nanoelectronics, specifically in the research area Nanospintronics and Related Materials and Structures. Many problems in the field of spintronics still lack good solutions, although there is very high pressure from the market side. The concept of half-metallic Heusler compounds provides a perspective for novel solutions. Heusler compounds can be designed and made with high spin polarisation and high Curie temperature, as well as, depending on the application, high spin injection efficiency, very low or high damping, tunable magnetic moment (low and high magnetic moment can be realised) and tunable anisotropy. Thus, there is very high potential, that many material related problems, present in current-day 3d metal systems, can be overcome. A big challenge is still the handling of interfaces with respect to their chemical (atomic diffusion and roughness), electronic (e.g., Schottky barrier design) and spin properties (spin injection and spin pumping). In addition, potential for new phenomena and applications exists using novel materials in the Heusler compound family, to name here novel semi-conducting Heusler compounds to be used as non-ferromagnetic spin conductors. To achieve this highly ambitious aim, the needed thorough experience and expertise is not localised in a single place and not even in a single country, and thus groups from two German universities, the Johannes Gutenberg University Mainz and the Technische Universität Kaiserslautern, combine their expertise with groups at the Tohoku University, Sendai, Japan. We feel we have a working unique expertise in understanding and making Heusler compounds as the only consortium in this field worldwide, which covers the full range from the computer based design to applications in real devices.