Microwave-induced magnetization dynamics and spin current
Dr. Ryo Iguchi
Date & Time: 16:00 - 17:00, November 28th (Mon), 2016.
Place: 8F Medium Seminar Room(#811-812), Sengen
Abstract:
In the field of spintronics, manipulation and detection of currents carrying the spin angular momentum are essential ingredients. Here, the spin angular momentum is typically carried by magnetization dynamics, i.e. magnons, and conduction electrons. These carriers were studied separately, but are now connected by a spin pumping effect at magnet/conductor interfaces. The magnons excited by microwaves have been intensively studied in spintronics and bring many interesting phenomena. In this talk, we will briefly review the background and progress of the microwave-based "magnon-spintronics". Although the spin Hall effect (SHE) is indispensable for electric access to magnons, in the conventional method based on the electric detection of the magnon-induced spin pumping, parasitic signals with similar symmetry to the SHE are known to appear. We will thus discuss the method for quantitatively estimating the SHE using the spin pumping. Finally, we will show our recent experimental progresses on spin Seebeck and Peltier effects.