作者
Albert F Rigosi, Dinesh Patel, Martina Marzano, Mattias Kruskopf, Heather M Hill, Hanbyul Jin, Jiuning Hu, Angela R Hight Walker, Massimo Ortolano, Luca Callegaro, Chi-Te Liang, David B Newell
发表日期
2019/12/1
期刊
Carbon
卷号
154
页码范围
230-237
出版商
Pergamon
简介
We have demonstrated the millimeter-scale fabrication of monolayer epitaxial graphene pn junction devices using simple ultraviolet photolithography, thereby significantly reducing device processing time compared to that of electron beam lithography typically used for obtaining sharp junctions. This work presents measurements yielding nonconventional, fractional multiples of the typical quantized Hall resistance at ν= 2 (R H≈ 12906 Ω) that take the form: a b R H. Here, a and b have been observed to take on values such 1, 2, 3, and 5 to form various coefficients of R H. Additionally, we provide a framework for exploring future device configurations using the LTspice circuit simulator as a guide to understand the abundance of available fractions one may be able to measure. These results support the potential for drastically simplifying device processing time and may be used for many other two-dimensional materials.
引用总数
20192020202120222023156245
学术搜索中的文章