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Title: Interface-based tuning of Rashba spin-orbit interaction in asymmetric oxide heterostructures with 3d electrons
Authors: Lin, W. 
Li, L.
Do?an, F.
Li, C. 
Rotella, H.
Yu, X. 
Zhang, B. 
Li, Y. 
Lew, W.S.
Wang, S.
Prellier, W.
Pennycook, S.J. 
Chen, J. 
Zhong, Z.
Manchon, A.
Wu, T.
Issue Date: 2019
Publisher: Nature Publishing Group
Citation: Lin, W., Li, L., Do?an, F., Li, C., Rotella, H., Yu, X., Zhang, B., Li, Y., Lew, W.S., Wang, S., Prellier, W., Pennycook, S.J., Chen, J., Zhong, Z., Manchon, A., Wu, T. (2019). Interface-based tuning of Rashba spin-orbit interaction in asymmetric oxide heterostructures with 3d electrons. Nature Communications 10 (1) : 3052. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
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. © 2019, The Author(s).
Source Title: Nature Communications
ISSN: 2041-1723
DOI: 10.1038/s41467-019-10961-z
Rights: Attribution 4.0 International
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