论文标题
在4 $ f $ antiferRomagnets中创建和操纵界面旋转，以巨大的磁反应
Creating and manipulating interfacial spin with giant magnetic response in 4$f$ antiferromagnets
论文作者
论文摘要
在低维电子系统（例如二维电子气体）中创建和操纵自旋极化对于Spintronic应用至关重要，这对于迄今为止却是一个挑战。在这项工作中，我们建立了4 $ f $抗铁磁tbsco $ _3 $的元磁相图，并揭示了其对亚tesla磁场的巨大磁反应，到目前为止尚未报道。利用这种巨大的磁反应，我们证明了Srtio $ _3 $/latio $ _3 $ _3 $/tbsco $ _3 $杂质结构的二维电子气体的自旋极化可以成功地操纵界面3 \ textit {d} -4 \ textit {d} -4 \ textit {f textIt {f textit {f}交换。值得注意的是，Srtio $ _3 $/latio $ _3 $接口的二维电子气体的滞后磁磁性完全取决于基础TBSCO $ _3 $ substrate的元磁相变。我们的结果铺平了一条新型的途径，以设计基于4 $ f $ antiferromagnet的异质结构中低维电子系统的自旋极化。
Creating and manipulating spin polarization in low-dimensional electron systems (such as two-dimensional electron gases) is fundamentally essential for spintronic applications, which is yet a challenge to date. In this work, we establish the metamagnetic phase diagram of 4$f$ antiferromagnetic TbScO$_3$ and reveal its giant magnetic response to sub-tesla magnetic field, which has not been reported thus far. Utilizing this giant magnetic response, we demonstrate that the spin polarization of two-dimensional electron gas in SrTiO$_3$/LaTiO$_3$/TbScO$_3$ heterostructure can be manipulated successfully in aid of interfacial 3\textit{d}-4\textit{f} exchange interaction. Remarkably, the hysteretic magnetoresistances of two-dimensional electron gas at the SrTiO$_3$/LaTiO$_3$ interface are entirely determined by the metamagnetic phase transitions of the underlying TbScO$_3$ substrate. Our results pave a novel route to engineer the spin polarization of low-dimensional electron systems in 4$f$ antiferromagnet-based heterostructures.
