Transport through graphene double dots

TL;DR

This paper reports on Coulomb blockade measurements in a graphene double dot system, demonstrating tunable coupling via in-plane gates and extracting key energy scales using a capacitive model.

Contribution

It introduces a method to tune and analyze coupling in graphene double dots, providing insights into their energy scales with a capacitive modeling approach.

Findings

Coupling is tunable and non-monotonic with gate voltage

All relevant energy scales are extracted using a capacitive model

Demonstrates control over graphene double dot systems

Abstract

We present Coulomb blockade measurements in a graphene double dot system. The coupling of the dots to the leads and between the dots can be tuned by graphene in-plane gates. The coupling is a non-monotonic function of the gate voltage. Using a purely capacitive model, we extract all relevant energy scales of the double dot system.