Conductance Quantization in Graphene Nanoribbons

TL;DR

This paper reports the experimental observation of conductance quantization in graphene nanoribbons, demonstrating 1D subband formation due to quantum confinement, observable at relatively high temperatures and long channel lengths, consistent with theoretical predictions.

Contribution

First experimental demonstration of conductance quantization in graphene nanoribbons at temperatures up to 80 K and lengths of 1.7 μm, confirming theoretical models.

Findings

Conductance quantization observed at 80 K

Quantization persists over 1.7 μm channel length

Results agree with theoretical predictions

Abstract

We report the experimental observation of conductance quantization in graphene nanoribbons, where 1D transport subbands are formed due to the lateral quantum confinement. We show that this quantization in graphene nanoribbons can be observed at temperatures as high as 80 K and channel lengths as long as 1.7 $\mu$m. The observed quantization is in agreement with that predicted by theoretical calculations.