| AVS 66th International Symposium & Exhibition | |
| Advanced Ion Microscopy and Ion Beam Nano-engineering Focus Topic | Thursday Sessions |
| Session HI+NS-ThM |
| Session: | Novel Beam Induced Material Engineering and Nano-Patterning |
| Presenter: | Jan Mol, Queen Mary University of London, UK |
| Authors: | J.L. Swett, University of Oxford, UK O. Dyck, Oak Ridge National Laboratory S. Jesse, Oak Ridge National Laboratory J.A. Mol, Queen Mary University of London, UK |
| Correspondent: | Click to Email |
Towards Atomically Precise Carbon Quantum Electronic Devices
Jacob L. Swetta, Ondrej Dyckb, Stephen Jesseb,Jan A. Mola,c
a Department of Materials, University of Oxford, Oxford, UK
b Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
c School of Physics and Astronomy, Queen Mary University of London, London, UK. Email: j.mol@qmul.ac.uk
Graphene exhibits many unique properties that can be further enhanced through nanostructuring and atomic manipulation. Such nanostructured devices have potential applications as molecular junctions [1], spin qubits [2], heat engines [3], and sensors [4], providing substantial motivation for their realization. Electron and ion beams provide unique and complementary tools for realizing some of these structures due to their ability to modify the graphene with atomic and nanoscale precision, respectively. Modification may take the form of direct-write patterning [5], defect production [6], dopant introduction [7], and dopant manipulation [8]. Although much progress has been realized in these areas, transport measurements of top-down fabricated atomically precise carbon nanostructures have yet to be realized. Here we present lessons learned and key findings for this emerging direction of research leveraged from years of fabrication and transport measurements of single molecules via non-covalent bonding to graphene nanoelectrodes [9]. We will present a broad overview of the challenges and progress in understanding and controlling the transport through atomic-scale devices and discuss how these lessons inform and translate to current experiments on introducing dopants and manipulating atoms on the atomic scale with electron and ion beams in graphene and other 2D materials. Finally, practical strategies for realization of these devices will be discussed, including contamination control, fabrication strategies, and transport measurements.
References:
[1] J.K. Sowa et al., J. Chem. Phys. 149, 154112 (2018)
[2] Trauzettel, Björn, et al., Nature Physics 3.3, 192 (2007).
[3] P. Gehring et al., Nano Lett. 17, 7055 (2017)
[4] P. Puczkarski et al., ACS Nano 12, 9451 (2018)
[5] Nanda, Gaurav, et al., Carbon 119, 419-425, (2017)
[6] Robertson, Alex W., et al., Nature communications 3 1144 (2012)
[7] Tripathi, Mukesh, et al., ACS nano 12.5 4641-4647 (2018)
[8] Dyck, Ondrej, et al., Small 14.38 1801771 (2018)
[9] C.S. Lau et al., Phys. Chem. Chem. Phys. 16, 20398 (2014)