Date: Monday, May 14, 2012
Time: 15:00 - 16:00
Place: 8th floor small seminar room (Room 811)
Spin current is a key concept of spintronics. So far, several methods has
been known to generate spin current, including the spin pumping effect
induced by magnetization dynamics. For detection of spin current, the inverse
spin Hall effect has been widely used. In this talk, we will study these
effects based on a microscopic theory, and discuss the spin-charge conversion
mechanism. We will show that there is a novel monopole in the spin pumping
+ inverse spin Hall systems. The monopole, a spin damping monopole, induces
the electric current via the Ampere's law and plays an essential role in
converting spin transport to charge transport.