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Title: Interface-based tuning of Rashba spin-orbit interaction in asymmetric oxide heterostructures with 3d electrons
Authors: Lin, Weinan
Li, Lei
Doğan, Fatih
Li, Changjian
Rotella, Hélène
Yu, Xiaojiang
Zhang, Bangmin
Li, Yangyang
Lew, Wen Siang
Wang, Shijie
Prellier, Wilfrid
Pennycook, Stephen J.
Chen, Jingsheng
Zhong, Zhicheng
Manchon, Aurelien
Wu, Tom
Keywords: Electronic Properties and Materials
Issue Date: 2019
Source: Lin, W., Li, L., Doğan, F., Li, C., Rotella, H., Yu, X., . . . Wu, T. (2019). Interface-based tuning of Rashba spin-orbit interaction in asymmetric oxide heterostructures with 3d electrons. Nature Communications, 10, 3052-. doi:10.1038/s41467-019-10961-z
Series/Report no.: Nature Communications
Abstract: The Rashba effect plays important roles in emerging quantum materials physics and potential spintronic applications, entailing both the spin orbit interaction (SOI) and broken inversion symmetry. In this work, we devise asymmetric oxide heterostructures of LaAlO3//SrTiO3/LaAlO3 (LAO//STO/LAO) to study the Rashba effect in STO with an initial centrosymmetric structure, and broken inversion symmetry is created by the inequivalent bottom and top interfaces due to their opposite polar discontinuities. Furthermore, we report the observation of a transition from the cubic Rashba effect to the coexistence of linear and cubic Rashba effects in the oxide heterostructures, which is controlled by the filling of Ti orbitals. Such asymmetric oxide heterostructures with initially centrosymmetric materials provide a general strategy for tuning the Rashba SOI in artificial quantum materials.
DOI: 10.1038/s41467-019-10961-z
Rights: © 2019 The Author(s). Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit
Fulltext Permission: open
Fulltext Availability: With Fulltext
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