*Article* **Electron Traversal Times in Disordered Graphene Nanoribbons**

### **Michael Ridley 1, Michael A. Sentef 2 and Riku Tuovinen 2,\***


Received: 28 June 2019; Accepted: 25 July 2019; Published: 27 July 2019

**Abstract:** Using the partition-free time-dependent Landauer–Büttiker formalism for transient current correlations, we study the traversal times taken for electrons to cross graphene nanoribbon (GNR) molecular junctions. We demonstrate electron traversal signatures that vary with disorder and orientation of the GNR. These findings can be related to operational frequencies of GNR-based devices and their consequent rational design.

**Keywords:** quantum transport; graphene nanoribbons; nonequilibrium Green's function
