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在石墨烯中调节的量子声学电传输

Yicheng Mou¹, Haonan Chen¹, Jiaqi Liu¹

¹State Key Laboratory of Surface Physics and Institute for Nanoelectronic Devices and Quantum Computing, Fudan University, Shanghai 200433, China.

|April 3, 2024

概括

这项研究引入了一种新的声电传输方法,使用石墨烯在酸上. 这种技术允许在没有磁场的情况下进行门调节的载体密度测量,并揭示了强大的量子振荡.

科学领域:

凝聚物质物理学凝聚物质物理学
材料科学材料科学材料科学
纳米技术纳米技术

背景情况:

与电力和热电力运输相比,由声波驱动的声电运输是一个尚未探索的领域.
石墨烯和其他二维材料为新型设备应用提供独特的电子特性.

研究的目的:

建立一个简单的,门调节的声电运输系统.
为了研究基于石墨烯的混合纳米设备中的声电现象.
探索无磁场载体密度提取和强大的量子振荡检测的潜力.

主要方法:

使用六角化 (hBN) 封装的石墨烯在酸 (LiNbO3) 压电基板上制造双门声电装置.
通过脉冲的表面声波产生纵向和横向的声电电压.
网关电压的应用来调整设备属性和磁场以诱导兰道量子化.

主要成果:

在制造的设备中成功生成声电电压.
演示与霍尔电阻相似的档案的门调节声电信号,使得无磁场的载体密度的确定.
观察了强烈而明显的声电量子振荡,其清晰度超过了舒布尼科夫-德哈斯振荡.

结论:

一个可行和门调节的声电传输设置已经被证明.
该方法为在没有外部磁场的2D材料中描述载体密度提供了一种新方法.
观察到的量子振荡突出了声电传输在探索各种范德瓦尔斯材料中的量子现象方面的潜力.

关键词:

兰道水平是兰道水平.电气运输电气运输电气运输门口的化能力.石墨烯是一种石墨烯.量子振荡是一种量子振荡.

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