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 modulation of the effective magnetization damping in the Py layer via the charge-to-spin conversion in the Tl-Pb layer. Using both the results of direct and inverse Edelstein effects, the Edelstein length is estimated to be ~0.1 nm for Tl-Pb compounds.
Cite
@article{arxiv.1807.08958,
title = {Efficient Edelstein effects in one-atom-layer Tl-Pb compound},
author = {Y. Shiomi and K. T. Yamamoto and R. Nakanishi and T. Nakamura and S. Ichinokura and R. Akiyama and S. Hasegawa and E. Saitoh},
journal= {arXiv preprint arXiv:1807.08958},
year = {2018}
}