Electron-electron interactions, topological phase, and optical properties of a charged artificial benzene ring

@article{Ozfidan2015ElectronelectronIT,
  title={Electron-electron interactions, topological phase, and optical properties of a charged artificial benzene ring},
  author={Isil Ozfidan and Milos Vladisavljevic and Marek Korkusinski and P. Hawrylak},
  journal={Physical Review B},
  year={2015},
  volume={92},
  pages={245304}
}
We present a theory of the electronic and optical properties of a charged artificial benzene ring (ABR). The ABR is described by the extended Hubbard model solved using exact diagonalization methods in both real and Fourier space as a function of tunneling matrix element t, Hubbard on-site repulsion U and inter-dot interaction V. In the strongly interacting case we present exact analytical results for the spectrum of the hole in a half-filled ABR dressed by spin excitations of remaining… 
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