Papers
2020
[23] C. A. Downing, D. Zueco, and L. Martín-Moreno
Chiral current circulation and PT symmetry in a trimer of oscillators
[22] T. J. Sturges, T. Repän, C. A. Downing, C. Rockstuhl and M. Stobińska
Extreme renormalisations of dimer eigenmodes by strong light-matter coupling
New J. Phys. 22, 103001 (2020)
[21] C. A. Downing and L. Martín-Moreno
Polaritonic Tamm states induced by cavity photons
[20] C. A. Downing, J. C. López Carreño, A. I. Fernández-Domínguez and E. del Valle
Asymmetric coupling between two quantum emitters
Phys. Rev. A 102, 013723 (2020)
2019
[19] C. A. Downing, T. J. Sturges, G. Weick, M. Stobińska and L. Martín-Moreno
Topological phases of polaritons in a cavity waveguide
Phys. Rev. Lett. 123, 217401 (2019)
[18] C. A. Downing and M. E. Portnoi
Zero-energy vortices in Dirac materials
Phys. Status Solidi B 256, 1800584 (2019)
[17] C. A. Downing, J. C. López Carreño, F. P. Laussy, E. del Valle and A. I. Fernández-
Domínguez
Quasichiral interactions between quantum emitters at the nanoscale
Phys. Rev. Lett. 122, 057401 (2019)
2018
[16] C. A. Downing and G. Weick
Topological plasmons in dimerized chains of nanoparticles: robustness against longrange
quasistatic interactions and retardation effects
Eur. Phys. J. B 91, 253 (2018)
[15] C. A. Downing, E. Mariani and G. Weick
Retardation effects on the dispersion and propagation of plasmons in metallic nanoparticle
chains
J. Phys.: Condens. Matter 30, 025301 (2018)
2017
[14] C. A. Downing and M. E. Portnoi
Bielectron vortices in two-dimensional Dirac semimetals
[13] C. A. Downing, E. Mariani and G. Weick
Radiative shifts in nanoplasmonic dimers
Phys. Rev. B 96, 155421 (2017)
[12] C. A. Downing and M. E. Portnoi
Localization of massless Dirac particles via spatial modulations of the Fermi velocity
J. Phys.: Condens. Matter 29, 315301 (2017)
[11] C. A. Downing and G. Weick
Topological collective plasmons in bipartite chains of metallic nanoparticles
Phys. Rev. B 95, 125426 (2017)
[10] C. A. Downing
Two-electron atom with a screened interaction
Phys. Rev. A 95, 022105 (2017)
2016
[9] A. Brandstetter-Kunc, G. Weick, C. A. Downing, D. Weinmann and R. A. Jalabert
Nonradiative limitations to plasmon propagation in chains of metallic nanoparticles
Phys. Rev. B 94, 205432 (2016)
[8] C. A. Downing, M. G. Robinson and M. E. Portnoi
Nanohelices as superlattices: Bloch oscillations and electric dipole transitions
Phys. Rev. B 94, 155306 (2016)
[7] C. A. Downing and M. E. Portnoi
Massless Dirac fermions in two dimensions: Confinement in nonuniform magnetic
fields
Phys. Rev. B 94, 165407 (2016)
[6] C. A. Downing and M. E. Portnoi
Magnetic quantum dots and rings in two-dimensions
Phys. Rev. B 94, 045430 (2016)
2015
[5] C. A. Downing, A. R. Pearce, R. J. Churchill and M. E. Portnoi
Optimum traps in graphene
Phys. Rev. B 92, 165401 (2015)
2014
[4] C. A. Downing and M. E. Portnoi
One-dimensional Coulomb problem in Dirac materials
Phys. Rev. A 90, 052116 (2014)
2013
[3] C. A. Downing
On a solution of the Schrödinger equation with a hyperbolic double-well potential
J. Math. Phys. 54, 072101 (2013)
2012
[2] D. A. Stone, C. A. Downing and M. E. Portnoi
Searching for confined modes in graphene channels: The variable phase method
Phys. Rev. B 86, 075464 (2012)
2011
[1] C. A. Downing, D. A. Stone and M. E. Portnoi
Zero-energy states in graphene quantum dots and rings
Phys. Rev. B 84, 155437 (2011)
Conference publications
[3] C. A. Downing and M. E. Portnoi
Trapping charge carriers in low-Dimensional Dirac materials
Int. J. Nanosci. 18, 1940001 (2019)
[2] T. P. Collier, A. M. Alexeev, C. A. Downing, O. V. Kibis and M. E. Portnoi
Terahertz optoelectronics of quantum rings and nanohelices
Semiconductors 52, 1813 (2018)
[1] M. E. Portnoi, C. A. Downing, R. R. Hartmann and I. A. Shelykh
Excitons and interband terahertz transitions in narrow-gap carbon nanotubes
IEEE Xplore International Conference on Electromagnetics in Advanced Applications,
231-234, (2013)
Book chapters
[2] T. P. Collier, V. A Saroka, C. A. Downing, A. M. Alexeev, R. R. Hartmann and
M. E. Portnoi
Terahertz applications of non-simply-connected and helical nanostructures
Fundamental and Applied Nano-Electromagnetics II
[1] C. A. Downing, M. G. Robinson and M. E. Portnoi
Electromagnetic properties of nanohelices
C. A. Downing 