Phys.org July 2, 2020
Hydrodynamic motion can generate a flux of electron-spin’s angular momentum via the coupling between fluid rotation and electron spins resulting in spin hydrodynamic generation (SHDG). Researchers in Japan have demonstrated electric voltage generation due to the SHDG in a laminar flow of a liquid-metal mercury. They experimentally confirmed that in the laminar flow region, energy conversion efficiency was increased by approximately 100,000 times. The technique has applications in spintronics-based nanofluidic devices such as liquid metal flow, cooling mechanisms in fast breeder reactors or semiconductor devices, as well as application to flowmeters that electrically measure micro-flows…read more. Open Access TECHNICAL ARTICLE
Spin hydrodynamic generation in a cylindrical channel. Credit: Nature Communications volume 11, Article number: 3009 (2020)