论文标题
旋转二极管中的低频非谐振整流
Low frequency non-resonant rectification in spin-diodes
论文作者
论文摘要
自旋二碘在本质上是共振（GHz频率）的共鸣，并且可以通过磁场和偏置电流来调节，并且在灵敏度和最小可检测功率方面，可以克服半导体对应物，即Schottky Diodes。最近，已经提出了以低频检测（MHz频率）为特征的自旋二极管。在这里，我们展示了一种基于磁性隧道连接的设计策略，该策略具有界面垂直于界面各向异性的界面各向异性，该频率是相同的脱离平面外部分量的相同顺序。 Micromagnetic calculations show that to reach this detection regime a threshold input power has to be overcome and the phase shift between the oscillation magnetoresistive signal and the input radiofrequency current plays the key role in determining the value of the rectification voltage.
Spin-diodes are usually resonant in nature (GHz frequency) and tuneable by magnetic field and bias current with performances, in terms of sensitivity and minimum detectable power, overcoming the semiconductor counterpart, i.e. Schottky diodes. Recently, spin diodes characterized by a low frequency detection (MHz frequency) have been proposed. Here, we show a strategy to design low frequency detectors based on magnetic tunnel junctions having the interfacial perpendicular anisotropy of the same order of the demagnetizing field out-of-plane component. Micromagnetic calculations show that to reach this detection regime a threshold input power has to be overcome and the phase shift between the oscillation magnetoresistive signal and the input radiofrequency current plays the key role in determining the value of the rectification voltage.
