arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2108.01770cond-mat.mes-hallcond-mat.mtrl-sci
收藏

界面自旋电流传输的原子尺度控制

Atomic scale control of spin current transmission at interfaces

Mohamed Amine Wahada, Ersoy Sasioglu, Wolfgang Hoppe, Xilin Zhou, Hakan Deniz, Reza Rouzegar, Tobias Kampfrath, Ingrid Mertig, Stuart S. P. Parkin, Georg Woltersdorf

摘要:

铁磁/重金属界面的自旋传输对许多自旋电子器件具有重要意义。通常自旋电流传输受到自旋混合电导和自旋记忆损耗等损耗机制的限制。为了理解这些效应,我们研究了在铁磁体和重金属之间插入绝缘夹层时的界面传输。为此,我们测量从光注入的自旋电流脉冲以及使用铁磁共振的自旋泵浦的幅度产生的反自旋霍尔电压。从我们的结果中,我们得出结论,显着的自旋记忆损失只发生在5d金属与不到一半的d-壳层填充。

英文摘要:

Spin transmission at ferromagnet/heavy metal interfaces is of vital importance for many spintronic devices. Usually the spin current transmission is limited by the spin mixing conductance and loss mechanisms such as spin memory loss. In order to understand these effects, we study the interface transmission when an insulating interlayer is inserted between the ferromagnet and the heavy metal. For this we measure the inverse spin Hall voltage generated from optically injected spin current pulses as well as the magnitude of the spin pumping using ferromagnetic resonance. From our results we conclude that significant spin memory loss only occurs for 5d metals with less than half filled d-shell.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑