Observation of Inverse Edelstein Effect in Rashba-Split 2DEG between SrTiO3 and LaAlO3 at Room Temperature

Abstract

The Rashba physics has been intensively studied in the field of spin orbitronics, for the purpose of searching novel physical properties and the FM magnetization switching for technology applications. Here, we report the observation of the inverse Edelstein effect up to room temperature in the Rashba-split 2DEG between two insulating oxides SrTiO3 and LaAlO3 with the LaAlO3 layer thickness from 3 to 40 unit cells (UC). We further demonstrate that the spin voltage could be dramatically manipulated by electric field effect for the 2DEG between SrTiO3 and 3 UC LaAlO3. These results demonstrate that the Rashba-split 2DEG at the complex oxide interface can be used for room temperature efficient charge-and-spin conversion for the generation and detection of spin current.

10 pages, 5 figures, Accepted to Science Advances

References in corpus (4)

• Highly efficient and tuneable spin-to-charge conversion through Rashba coupling at oxide interfaces
• Scaling behavior of the spin pumping effect in ferromagnet/platinum bilayers
• Visible light enhanced field effect at LaAlO3/SrTiO3 interface
• Spin Injection and Inverse Edelstein Effect in the Surface States of Topological Kondo Insulator SmB6

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