Efficient intrinsic spin-to-charge current conversion in an all-epitaxial single-crystal perovskite-oxide heterostructure of La0.67Sr0.33MnO3/LaAlO3/SrTiO3
Efficient intrinsic spin-to-charge current conversion in an all-epitaxial single-crystal perovskite-oxide heterostructure of La0.67Sr0.33MnO3/LaAlO3/SrTiO3
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DOI：
10.1103/physrevresearch.2.012014
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发表时间：
2020-01-14
影响因子：
4.2
通讯作者：
Tanaka, Masaaki
中科院分区：
文献类型：
--
作者：
Ohya, Shinobu;Araki, Daisei;Tanaka, Masaaki
我们使用LaSrMnO 3/LaAlO 3/SrTiO 3的全外延单晶异质结构在二维电子气中证明了有效的本征自旋-电荷电流转换，该异质结构可以抑制自旋散射，并为我们提供了一个理想的环境来研究本征自旋-电荷转换。随着温度降低到20 K，自旋-电荷转换效率急剧提高到+6.7 nm。我们的能带结构计算很好地再现了这种行为，并预测通过控制载流子的密度和弛豫时间进一步增强。
We demonstrate efficient intrinsic spin-to-charge current conversion in a two-dimensional electron gas using an all-epitaxial single-crystal heterostructure of LaSrMnO3/LaAlO3/SrTiO3, which can suppress spin scattering and give us an ideal environment to investigate intrinsic spin-charge conversion. With decreasing temperature to 20 K, the spin-to-charge conversion efficiency is drastically enhanced to +6.7 nm. Our band-structure calculation well reproduces this behavior and predicts further enhancement by controlling the density and relaxation time of the carriers.