Browsing by Author "Hawrylak, Pawel"
Now showing items 1-5 of 5
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Electron-electron interactions and topology in the electronic properties of gated graphene nanoribbon rings in Möbius and cylindrical configurations
Güçlü, Alev Devrim; Grabowski, Marek; Hawrylak, Pawel (American Physical Society, 2013-01)We present a theory of the electronic properties of gated graphene nanoribbon rings with zigzag edges in Möbius and cylindrical configurations. The finite width opens a gap and nontrivial topology of the Möbius ring leads ... -
Graphene-based integrated electronic, photonic and spintronic circuit
Potasz, P.; Güçlü, Alev Devrim; Özfidan, Işıl; Korkusinski, Marek; Hawrylak, Pawel (SPIE, 2013)To create carbon-based nanoscale integrated electronic, photonic, and spintronic circuit one must demonstrate the three functionalities in a single material, graphene quantum dots (GQDs), by engineering lateral size, shape, ... -
Microscopic theory of the optical properties of colloidal graphene quantum dots
Özfidan, Işıl; Korkusiński, Marek; Güçlü, Alev Devrim; Mcguire, John A.; Hawrylak, Pawel (American Physical Society, 2014-02)We present a microscopic theory of electronic and optical properties of colloidal graphene quantum dots (CGQDs). The single-particle properties are described in the tight-binding model based on the pz carbon orbitals. ... -
Sublattice engineering and voltage control of magnetism in triangular single and bi-layer graphene quantum dots
Güçlü, Alev Devrim; Potasz, P.; Hawrylak, Pawel (Wiley, 2016-01)When a Dirac electron is confined to a triangular graphene quantum dot with zigzag edges, its low-energy spectrum collapses to a shell of degenerate states at the Fermi level leading to a magnetized edge. The shell degeneracy ... -
Theory of optical properties of graphene quantum dots
Özfidan, Işıl; Güçlü, Alev Devrim; Korkusinski, Marek; Hawrylak, Pawel (Wiley, 2016-01)We present here a theory of the optical properties of graphene quantum dots (GQDs) with tunable band gaps by lateral size confinement, from UV to THz. Starting from the Hartree-Fock ground state, we construct the correlated ...
