二维电子气作为灵敏的噪声探测器
Two-dimensional electron gas as a sensitive noise detector
AI总结:
本文提出二维电子气可作为灵敏噪声探测器,通过肖特基接触整流机制,将测量电路噪声转化为直流电压,其响应随噪声幅度经历二次、线性及饱和三个阶段。
摘要:
在低温下,二维电子样品中观察到的直流电压(在无外部激发的情况下)可归因于测量电路中产生的噪声经肖特基接触整流所致。研究表明,整流电压取决于接触对的不对称性。整流电压对噪声幅度的依赖关系首先遵循平凡的二次定律,随后呈现近似线性行为,最后趋于饱和。
英文摘要:
The dc voltage observed at low-temperatures in a 2D electron sample $without$ external excitation is accounted by the Schottky contact rectification of the noise generated in the measuring circuit. The rectified voltage is shown to depend on the asymmetry of the contact pair. The dependence of the rectified voltage on the noise amplitude first follows the trivial quadratic law, then exhibits a nearly linear behavior, and, finally, levels-off.
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。