Date: 2024-04-10
Time: 10:00
Venue: M234
Speaker: Professor Sadamichi Maekawa
               RIKEN Center for Emergent Matter Science

报告摘要:

In metals with disorder, the electron transport is described to be diffusive.On the other hand, in those with electron-electron interaction being the dominant source of scattering, the motion of electrons resembles the flow of classical fluids with shear viscosity, namely, the hydrodynamic fluids. The recent progress of nano-technology has made it possible to extend the study on hydrodynamic electron fluids. In such fluids, the angular momentum of the fluid vorticity and electron spins couple each other due to the angular momentum conservation, i.e., the spin-vorticity coupling. Combining the Novier-Stokes and the spin diffusion equations, we examine a variety of spintronic phenomena in the electron fluids, and present that metals with nano-structure provide unique spintronic devices due to the local hydrodynamic nature. The hydrodynamic phenomena of electron fluids open a door to "Hydrodynamic spintronics" .

报告人简介：

Sadamichi Maekawa is a Senior Visiting Scientist/Scientific Advisor of RIKEN Center for Emergent Matter Science, a Visiting Chair Professor of Kavli Institute for Theoretical Sciences at UCAS and a Professor Emeritus at Tohoku University. He has studied on electronic properties in condensed matters and published several books such as “Spin Current” in 2015 and 2017 and “Physics of Transition Metal Oxides” in 2004. He received his PhD from Tohoku University and worked in Tohoku University, Nagoya University, and IBM Watson Research Center in New York, and spent extended periods at several institutes and universities in various countries. He won various awards including IUPAP Magnetism Award and Humboldt Award.

联系人：胡江平 研究员 （8264 9818）

　　　　韩秀峰 研究员 （8264 9268）