Experimental Demonstration of Spintronic Broadband Microwave Detectors and Their Capability for Powering Nanodevices
Experimental Demonstration of Spintronic Broadband Microwave Detectors and Their Capability for Powering Nanodevices
复制标题
自旋电子宽带微波探测器及其为纳米器件供电的能力的实验演示
DOI：
10.1103/physrevapplied.11.014022
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发表时间：
2019-01-10
影响因子：
4.6
通讯作者：
Zeng, Zhongming
中科院分区：
文献类型：
--
作者：
Fang, Bin;Carpentieri, Mario;Zeng, Zhongming
在灵敏度方面，非线性动力学一直是提高偏置共振自旋电子二极管性能的关键因素，使其超越了半导体同类器件。我们通过实验展示了纳米级自旋电子二极管（NSD）的非线性区域宽带检测，其中整流特性与输入微波频率无关，并将该器件的性能与用于低功率整流的最先进的肖特基二极管进行了比较。这种特性是在自由层具有倾斜磁化的磁性隧道结中实现的。我们进一步表明，所开发的NSD能够提供足够的直流电压来为一个低功率纳米器件——黑磷光电传感器供电。我们的研究结果可能为将自旋电子探测器用作自供电纳米系统（如可植入生物医学设备、无线传感器和便携式电子设备）的构建模块铺平道路。
The harvesting of ambient radio-frequency (RF) energy is an attractive and clean way to realize the idea of self-powered electronics. Here we present a design for a microwave energy harvester based on a nanoscale spintronic diode (NSD). This diode contains a magnetic tunnel junction with a canted magnetization of the free layer, and can convert RF energy over the frequency range from 100 MHz to 1.2 GHz into DC electric voltage. An attractive property of the developed NSD is the generation of an almost constant DC voltage in a wide range of frequencies of the external RF signals. We further show that the developed NSD provides sufficient DC voltage to power a low-power nanodevice - a black phosphorus photo-sensor. Our results demonstrate that the developed NSD could be used as a building block for self-powered nano-systems, such as implantable biomedical devices, wireless sensors, and portable electronic devices.