Exploring spin dynamics visualization and its application to new functional devices

2014 Fiscal Year Final Research Report

• Project/Area Number: 22226003
• Research Category: Grant-in-Aid for Scientific Research (S)
• Allocation Type: Single-year Grants
• Research Field: Thin film/Surface and interfacial physical properties
• Research Institution: University of Tsukuba
• Principal Investigator: SHIGEKAWA Hidemi 筑波大学, 数理物質系, 教授 (20134489)
• Co-Investigator(Renkei-kenkyūsha): TAKEUCHI Osamu 筑波大学, 数理物質系, 准教授 (20361321) ; OIGAWA Haruhiro 筑波大学, 数理物質系, 講師 (60223715)
• Project Period (FY): 2010-04-01 – 2015-03-31
• Keywords: 走査プローブ顕微鏡 / スピンダイナミックス / 可視化 / 時間分解計測 / 超高速分光 / ナノ科学

Outline of Final Research Achievements

Combining laser technology, which enables the probing of ultrafast phenomena in the femtosecond range and scanning tunneling microscopy, which enables the observation of atomic structures of materials, we have been developing new microscopy techniques that simultaneously provide ultimate temporal and spatial resolutions. In this project, by using circularly polarized laser pulses together with a new method of controlling ultrashort laser pulses, we have realized a new microscopy technique that enables the probing of the characteristics of ultrafast spin dynamics. Using this new microscopy technique, we can obtain information on the newly observed phenomena that cannot be analyzed by conventional methods in which information is averaged temporally and/or spatially. This entirely new microscopy technique can be used to obtain new information useful for the development of basic studies on nanoscale science and for the further advancement of device technologies to realize new functions.

Free Research Field

走査プローブ顕微鏡と量子光学を融合した極限計測技術の開拓とナノスケール物性研究への応用