70 citations · 217 across the 7 of their papers we have counts for
8 papers
Enhancement of the Kondo effect through Rashba spin-orbit interactions
Mahdi Zarea, Sergio E. Ulloa, Nancy Sandler
We analyze the physics of a one-orbital Anderson impurity model in a two-dimensional electron gas in the presence of Rashba spin-orbit (RSO) interactions in the Kondo regime. The s…
Graphene zigzag ribbons, square lattice models and quantum spin chains
Mahdi Zarea, Nancy Sandler
We present an extended study of finite-width zigzag graphene ribbons (ZGRs) based on a tight-binding model with hard-wall boundary conditions. We provide an exact analytic solution…
Quantum spin Hall phase in neutral zigzag graphene ribbons
Mahdi Zarea, Nancy Sandler
We present a detailed description of the nature of the wavefunction and spin distribution of the zero energy modes of zigzag graphene ribbons (ZGRs) in the presence of the intrinsi…
Rash spin-orbit interaction in graphene and graphene zigzag nano-ribbons
Mahdi Zarea, Nancy Sandler
We investigate the effects of Rashba spin-orbit interactions on the electronic band-structure and corresponding wave-functions of graphene. By exactly solving a tight-binding model…
Unscreened Coulomb interactions and quantum spin Hall phase in neutral zigzag graphene ribbons
Mahdi Zarea, Carlos Büsser, Nancy Sandler
A study of the effect of unscreened Coulomb interactions on the quantum spin Hall (QSH) phase of finite-width neutral zigzag graphene ribbons is presented. By solving a tight-bindi…
Electron-electron and spin-orbit interactions in armchair graphene ribbons
Mahdi Zarea, Nancy Sandler
The effects of intrinsic spin-orbit and Coulomb interactions on low-energy properties of finite width graphene armchair ribbons are studied by means of a Dirac Hamiltonian. It is s…