Recent Advances on Spin-Polarized Two-Dimensional Electron Gases at Oxide Interfaces
Wei Niu, Xuefeng Wang, Yongbing Xu, Rong Zhang
Abstract
Two-dimensional electron gases (2DEGs) at oxide heterointerfaces show a plethora of intriguing properties and functionality, which has been the focus of intense study in recent years. Rashba spin–orbit coupling stemming from the symmetry breaking supplies the oxide interfaces with a versatile handle to generate, transport, detect, and convert spin current. This review provides a summary of the recent advances on the 2DEGs at oxide interfaces for spintronic applications, mainly focusing on spin-polarized 2DEGs, spin generation and detection, spin-to-charge interconversion, and spin transport of 2DEGs. All of these intriguing properties not only show great promise for the 2DEGs at oxide interfaces in all-oxide spintronics devices but also expand the boundaries of our understanding of this profound cutting-edge field.