33 citations · 103 across the 9 of their papers we have counts for
9 papers
RF compressibility of topological surface and interface states in metal-hBN-Bi2Se3 capacitors
Andreas Inhofer, Taylor Wilde, Jack Duffy +9
The topological state that emerges at the surface of a topological insulator (TI) and at the TI-substrate interface are studied in metal-hBN-Bi2Se3 capacitors. By measuring the RF…
RF-quantum capacitance of the topological insulator Bi2Se3 in the bulk depleted regime for field-effect transistors
A. Inhofer, J. Duffy, M. Boukhicha +9
A Metal-dielectric-topological insulator capacitor device based on hBN-encapsulated CVD grown Bi2Se3 is realized and investigated in the radio frequency regime. The RF quantum capa…
Dynamic RKKY interaction between magnetic moments in graphene nanoribbons
F. S. M. Guimarães, J. Duffy, A. T. Costa +2
Graphene has been identified as a promising material with numerous applications, particularly in spintronics. In this paper we investigate the peculiar features of spin excitations…
Impurity invisibility in graphene: Symmetry guidelines for the design of efficient sensors
John Duffy, James A Lawlor, Caio Lewenkopf +1
Renowned for its sensitivity to detect the presence of numerous substances, graphene is an excellent chemical sensor. Unfortunately, which general features a dopant must have in or…
Strain-Modified RKKY Interaction in Carbon Nanotubes
P. D. Gorman, J. M. Duffy, S. R. Power +1
For low-dimensional metallic structures, such as nanotubes, the exchange coupling between localized magnetic dopants is predicted to decay slowly with separation. The long-range ch…
RKKY interaction between extended magnetic defect lines in graphene
Paul D. Gorman, John M. Duffy, Stephen R. Power +1
Of fundamental interest in the field of spintronics is the mechanism of indirect exchange coupling between magnetic impurities embedded in metallic hosts. A range of physical featu…