| Autor: |
M, Michiardi, F, Boschini, H-H, Kung, M X, Na, S K Y, Dufresne, A, Currie, G, Levy, S, Zhdanovich, A K, Mills, D J, Jones, J L, Mi, B B, Iversen, Ph, Hofmann, A, Damascelli |
| Rok vydání: |
2021 |
| Zdroj: |
Nature communications. 13(1) |
| ISSN: |
2041-1723 |
| Popis: |
In spintronics, the two main approaches to actively control the electrons' spin involve static magnetic or electric fields. An alternative avenue relies on the use of optical fields to generate spin currents, which can bolster spin-device performance, allowing for faster and more efficient logic. To date, research has mainly focused on the optical injection of spin currents through the photogalvanic effect, and little is known about the direct optical control of the intrinsic spin-splitting. To explore the optical manipulation of a material's spin properties, we consider the Rashba effect. Using time- and angle-resolved photoemission spectroscopy (TR-ARPES), we demonstrate that an optical excitation can tune the Rashba-induced spin splitting of a two-dimensional electron gas at the surface of Bi |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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