论文标题
旋转在Rashba-Split srtio $ _3 $接口的旋转转换
Spin to charge conversion at Rashba-split SrTiO$_3$ interfaces from resonant tunneling
论文作者
论文摘要
旋转电荷互连是旋转三位型的非常活跃的方向。但是，尚不完全了解一些最有前途的系统（例如SRTIO $ _3 $（STO）接口）的复杂行为。在这里，根据6频段$ \ boldsymbol {k.p} $方法与自旋分辨散射理论相结合，我们对Sto rashba接口中的横向自旋式互转换物理学进行了理论证明。计算涉及通过在sto三角形量子的天然rashba分裂谐振水平中恢复隧穿，从铁磁接触中注入自旋电流。我们计算一个不对称的隧道电子传输，得出平面流动的横向电荷电流，与现有的实验数据相吻合，与栅极电压相关。
Spin-charge interconversion is a very active direction in spintronics. Yet, the complex behaviour of some of the most promising systems such as SrTiO$_3$ (STO) interfaces is not fully understood. Here, on the basis of a 6-band $\boldsymbol{k.p}$ method combined with spin-resolved scattering theory, we give a theoretical demonstration of transverse spin-charge interconversion physics in STO Rashba interfaces. Calculations involve injection of spin current from a ferromagnetic contact by resonant tunneling into the native Rashba-split resonant levels of the STO triangular quantum well. We compute an asymmetric tunneling electronic transmission yielding a transverse charge current flowing in plane, with a dependence with gate voltage in a very good agreement with existing experimental data.
