Comment on "Tunable Band Gaps in Bilayer Graphene-BN Heterostructures"

TL;DR

This paper analyzes the electronic properties of h-BN/graphene/h-BN trilayer systems, critically evaluating recent conflicting results and reaffirming previous conclusions through detailed computational analysis.

Contribution

It provides a detailed critique and validation of earlier computational findings on the electronic properties of ABC-stacked trilayer heterostructures.

Findings

Reaffirms previous conclusions on electronic properties

Clarifies discrepancies with recent conflicting results

Uses tight binding and DFT methods for analysis

Abstract

We study the electronic properties of h-BN/graphene/h-BN ABC-stacked trilayer systems using tight binding and DFT methods. We comment on the recent work of Ramasubramaniam et al. (arxiv:1011.2489) whose results seem to be in disagreement with our recent calculations. Detailed analysis reaffirms our previous conclusions.