Design of room temperature spintronics nanodevices: Investigations of buried interfaces by Spin Polarized Hard X-ray photoemission

来自日本和德国的科学家和具有高自旋极化的新型复合材料自旋电子学领域的专家提出了一项联合研究计划，以开发用于室温自旋电子学的新型纳米电子器件。该提案利用材料设计(Felser，Mainz)、先进表征方法(Kobayashi，NIMS；Schönhense，Mainz)和器件制造(Inomata，NIMS，Yamamoto，北海道大学)等领域的综合研究工作中的协同效应。德国和日本集团之间的双边合作已经建立(见联合参考文献)。对于新的室温自旋电子器件的设计，我们必须超越双边合作。自旋电子器件在不同材料之间的接口是一个挑战，必须大力改进。在提出的研究项目中，我们希望用最近发展起来的硬X射线光电子能谱(HAXPES)来研究自旋电子学设备的界面。这种方法使我们能够在纳米尺度上利用光电子能谱来研究整个器件的电子结构，特别是界面的电子结构。此外，我们还希望在SPRING8上开发自旋极化高分辨率硬X射线光发光谱(SPINHAXPES)，这是一种全球范围内的新方法。所有的建议书都有一个联合的长期项目，从2008年4月1日开始在斯普林格8号。该方案保证了计划研究项目在同步加速器上的测量时间。日本的项目合作伙伴已经在BLM47XU开发了一个终端站，这是美国国家材料科学研究所(NIMS)的HAXPES光束线。

Scientists from Japan and Germany, experts in the field of spintronics of novel complex materials with high spin polarization propose a joint research project to develop new nanoelectronic devices for room temperature spintronics application. The proposal takes advantage of synergy in a combined research effort in the fields of materials design (Felser, Mainz) advanced characterization methods (Kobayashi, NIMS; Schönhense, Mainz) and device fabrication (Inomata, NIMS, Yamamoto, Hokkaido Univ.). Bilateral cooperations between the German and the Japanese groups are established (see joint references). For the design of new room temperature spintronics devices we have to go beyond the bilateral cooperations. The interfaces of the spintronics devices between different materials are the challenge and have to be strongly improved. In the proposed research project we like to investigate interfaces of devices for spintronics by recently developed HArd Xray Photo Emission Spectroscopy (HAXPES). The method enables us to investigate the electronic structure of a whole device especially of the interface by photoelectron spectroscopy on a nanometer scale. Additionally we like to develop SPIN polarized high resolution HArd Xray Photo Emission Spectroscopy (SPINHAXPES) at SPring8, a new method world wide. All proposers have a joint longterm project at SPring8 starting from the 1.04.2008. This proposal guarantees measurement time at the synchrotron for the planned research project. The Japanese project partners have developed an end station at the BLM47XU, which is the HAXPES Beamline of the National Institute for Materials Science (NIMS).