Efficient Edelstein effects in one-atom-layer Tl-Pb compound
Efficient Edelstein effects in one-atom-layer Tl-Pb compound
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DOI：
10.1063/1.5040546
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发表时间：
2018-07
影响因子：
4
通讯作者：
Yuki Shiomi;K. Yamamoto;R. Nakanishi;Terutaro Nakamura;S. Ichinokura;Ryota Akiyama;Shuji Hasegawa;Eiji Saitoh
中科院分区：
文献类型：
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作者：
Yuki Shiomi;K. Yamamoto;R. Nakanishi;Terutaro Nakamura;S. Ichinokura;Ryota Akiyama;Shuji Hasegawa;Eiji Saitoh
我们研究了具有大rashba型自旋分裂的单原子层Tl-Pb化合物中的直接和逆Edelstein效应。在室温下的自旋泵浦实验中，Py/Cu/Tl-Pb三层样品中明显观察到逆Edelstein效应引起的自旋-电荷转换电压。为了证实Tl-Pb化合物中有效的自旋-电荷相互转换，在相同的三层样品中，通过测量Tl-Pb层中电荷-自旋转换对Py层中有效磁化阻尼的调制，研究了直接Edelstein效应。利用直接和反向Edelstein效应的结果，估计Tl-Pb化合物的Edelstein长度为~ 0.1 nm。我们研究了具有大rashba型自旋分裂的单原子层Tl-Pb化合物中的直接和逆Edelstein效应。在室温下的自旋泵浦实验中，Py/Cu/Tl-Pb三层样品中明显观察到逆Edelstein效应引起的自旋-电荷转换电压。为了证实Tl-Pb化合物中有效的自旋-电荷相互转换，在相同的三层样品中，通过测量Tl-Pb层中电荷-自旋转换对Py层中有效磁化阻尼的调制，研究了直接Edelstein效应。利用直接和反向Edelstein效应的结果，估计Tl-Pb化合物的Edelstein长度为~ 0.1 nm。
We have investigated direct and inverse Edelstein effects in a one-atom-layer Tl-Pb compound with a large Rashba-type spin splitting. In spin pumping experiments at room temperature, spin-to-charge conversion voltage due to the inverse Edelstein effect is clearly observed in Py/Cu/Tl-Pb trilayer samples. To confirm efficient spin-charge interconversion in Tl-Pb compounds, the direct Edelstein effect is also studied in the same trilayer samples by measuring the modulation of the effective magnetization damping in the Py layer via the charge-to-spin conversion in the Tl-Pb layer. Using the results of both direct and inverse Edelstein effects, the Edelstein length is estimated to be ∼0.1 nm for Tl-Pb compounds.We have investigated direct and inverse Edelstein effects in a one-atom-layer Tl-Pb compound with a large Rashba-type spin splitting. In spin pumping experiments at room temperature, spin-to-charge conversion voltage due to the inverse Edelstein effect is clearly observed in Py/Cu/Tl-Pb trilayer samples. To confirm efficient spin-charge interconversion in Tl-Pb compounds, the direct Edelstein effect is also studied in the same trilayer samples by measuring the modulation of the effective magnetization damping in the Py layer via the charge-to-spin conversion in the Tl-Pb layer. Using the results of both direct and inverse Edelstein effects, the Edelstein length is estimated to be ∼0.1 nm for Tl-Pb compounds.