2011 Fiscal Year Final Research Report

spin current distribution measurement by scanning probe microscopy

Research Project

Project/Area Number	22760025
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Thin film/Surface and interfacial physical properties
Research Institution	The University of Tokyo
Principal Investigator	HAMADA Masayuki 東京大学, 物性研究所, 技術専門職員 (00396920)
Co-Investigator(Renkei-kenkyūsha)	HASEGAWA Yukio 東京大学, 物性研究所, 准教授 (80252493)
Project Period (FY)	2010 – 2011
Keywords	走査プローブ顕微鏡
Research Abstract	In spintronics, development of the generation and detection methods of spin current is a very important issue. By the progress of microfabrication techniques in recent years, the lateral spin-valve devices have come to be realized and several reports on spin current detection have been reported. In this study, by detecting spin-polarized tunnel current locally with using a tip of scanning probe microscopy as one electrode of the lateral spin-valve devices, we aimed at two-dimensional mapping of the spin current distribution. We have developed scanning tunneling potentiometry(STP) which was essential for the spin detection.