论文标题

扩展基于石墨烯的设备技术用于电阻计量学

Expansion of Graphene-Based Device Technology for Resistance Metrology

论文作者

Rigosi, Albert F.

论文摘要

考虑到2D材料系统提供了对有趣的量子现象的访问,包括与进行相关测量相关的基础设施,量子霍尔计量学领域在对基于GAAS的设备的遗传中的开端有很强的开端。随着该技术的规定,在过去的二十年中,基础设施和标准都进一步改进,因为基于EG的量化大厅电阻(QHR)设备已确立为国家标准。由于计量社区已经了解了与基于GAAS的QHR设备进行比较的了解,因此下一步变得更加清晰,就基于EG的QHR如何使用单个霍尔酒吧的QHR而言,可以进一步开发。自90年代初以来,QHR设备具有互连的几个单室棒元素的方法,此后一直是研究的主题,这是一个适中的兴趣。现在,NMIS目前处于一个关头,必须对其进行考虑,而不仅仅是操作的简单性。电阻标准的自然方向是增加总可访问参数空间。这意味着使用基于EG的QHR设备输出的输出大于$ν= 2 $ plateau(约12.9 K $ω$)的单个值。第一个自然的问题是,是否可以使用$ν= 6 $高原还是$ν= 10 $高原,尽管在石墨烯中使用了这些Landau水平的工作,但它们根本没有提供与$ν= 2 $ plateau的精确度相同。

The field of Quantum Hall metrology had a strong start with the implemntation of GaAs-based devices, given that 2D materials systems provided access to interesting quantum phenomena, including the infrastructure associated with making relevant measurements. With the technology laid out, further improvements in both infrastructure and standards were achieved in the previous two decades as EG-based quantized Hall resistance (QHR) devices became established as national standards. Since the metrology community has reached some understanding that a comparison against GaAs-based QHR devices had been accomplished, the next steps became clearer as far as how the EG-based QHR with a single Hall bar could be further developed. Since the early 90s, it has been of modest interest that QHR devices have a means of interconnecting several single Hall bar elements and has since been a subject of research. NMIs are now presently at a juncture where consideration must be granted beyond just simplicity of operation. A natural direction for resistance standards would be to increase the total accessible parameter space. This means using EG-based QHR devices to output more than the single value at the $ν= 2$ plateau (about 12.9 k$Ω$). A first natural question is whether one may use the $ν= 6$ plateau or $ν= 10$ plateau, and though some work has been done with these Landau levels in graphene, they simply do not offer the same level of precision as the $ν= 2$ plateau.

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