Observation of quantum interference conductance fluctuations in metal rings with strong spin-orbit coupling
Observation of quantum interference conductance fluctuations in metal rings with strong spin-orbit coupling
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DOI：
10.1063/5.0031708
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发表时间：
2020-12-14
影响因子：
4
通讯作者：
Saitoh, E.
中科院分区：
文献类型：
--
作者：
Ramos, R.;Makiuchi, T.;Saitoh, E.
我们研究了横向尺寸小于100 nm的介观铂纳米结构（线和环）在极低温度下的磁输运性质。尽管铂中存在很强的自旋-轨道相互作用，但由于量子干涉效应，电导作为外磁场的函数出现振荡。该振荡被分解为Aharonov-Bohm周期振荡和非周期波动的电导由于磁通量穿透环的回路和形成纳米结构的金属线，分别。我们还研究了不同偏置电流下的磁输运，以探讨强自旋轨道导体中电子相位相干性和自旋累积效应之间的相互作用。由AIP Publishing授权出版。
We investigated the magnetotransport properties of mesoscopic platinum nanostructures (wires and rings) with sub-100nm lateral dimensions at very low temperatures. Despite the strong spin-orbit interaction in platinum, oscillation of the conductance as a function of the external magnetic field due to quantum interference effects was found to appear. The oscillation was decomposed into Aharonov-Bohm periodic oscillations and aperiodic fluctuations of the conductance due to a magnetic flux piercing the loop of the ring and the metal wires forming the nanostructures, respectively. We also investigated the magnetotransport under different bias currents to explore the interplay between electron phase coherence and spin accumulation effects in strong spin-orbit conductors. Published under license by AIP Publishing.