Yokoshi, Nobuhiko

Graduate School of Engineering, Osaka Prefecture UniversityAssociate Professor*Profile is at the time of the award.

2019Inamori Research GrantsScience & Engineering

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Research topics: Theory of optical vortex-induced spintronics

Keyword

Summary: Spintronics, which exploits "charge (orbit)" and "spin" degrees of freedom of electrons, has explosively developed. Many of achievements has already been in the phase of practical application. Furthermore, in recent years, opto-spintronics that includes degrees of freedom of light has attracted attention as a next-generation technology. However, in comparison with the electron's degree of freedom, only the light's "spin (circularly polarized light)" degree of freedom has attracted attention, and its "orbit" has not been considered deeply.
Here, we will theoretically clarify the conduction phenomena and magnetization dynamics of electrons excited by light with an angular momentum (optical vortex). It is expected that the excited electrons are subjected to novel spin-orbit interaction induced by optical vortex. By developing spintronics based on such a vortex-induced spin-orbit interaction, I would like to present the spintronics field with the possibility of further controllability.

Message from recipient

I am profoundly grateful to the Inamori Foundation for awarding me this time-honored research grant. I feel both honored and humbled. I am working on an exploratory topic in basic science, and so my findings will not be applied to everyday life any time soon, but I will attend to my research on a daily basis so I can return the results and knowledge gained from my research to society at large.

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