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July 29, 2013

Mtg: Advanced Spintronic Materials for Generation and Control of Spin Current

by @ 1:18 pm. Filed under ALL, NanoEngineering, Optics/Displays, Semiconductors
 

TUESDAY September 17, 2013
SCV Magnetics Chapter
Speaker: Dr. Koki Takanashi, IEEE Distinguished Lecturer, Institute for Materials Research (IMR), Tohoku University
Time: Networking and pizza at 6:45 PM; Presentation at 7:30 PM
Cost: none
Place: Western Digital, 1710 Automation Parkway, San Jose
RSVP: not required
Web: ewh.ieee.org/r6/scv/mag

â??Spin currentâ? — i.e., the flow of spin angular momentum — in magnetic nanostructures has emerged as a fascinating physical concept during the recent development of spintronics.  In magnetic nanostructures, magnetism correlates strongly with electronic transport and also other physical properties, leading to the mutual control of magnetic, transport, and other physical properties.  Spin current is the most basic concept relevant to the mutual control, and efficient generation and precise control of spin current in magnetic nanostructures are key technologies for the further development of spintronics.  There are two kinds of spin current: one is accompanied by an electric current, and the other is not.  Spin current without an electric current is called pure spin current, which is actually generated by several experimental methods such as non-local spin injection, spin Hall effect, spin pumping, spin Seebeck effect, and so on.  In recent years spin current has been extensively investigated, and particularly the understanding of pure spin current has dramatically developed.
In this lecture the concept, historical background, and recent progress in research of spin current will be reviewed, and then some topics on advanced materials for the generation and control of spin current will be introduced, with a focus on magnetic ordered alloys: half-metallic Heusler alloys as a highly efficient spin injector/detector and L10-ordered alloys with high magnetic anisotropy as a perpendicularly polarized spin injector/detector.

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