580 citations · 1.3k across the 6 of their papers we have counts for
6 papers
Photocurrent imaging and efficient photon detection in a graphene transistor
Fengnian Xia, Thomas Mueller, Roksana Golizadeh-mojarad +5
We measure the channel potential of a graphene transistor using a scanning photocurrent imaging technique. We show that at a certain gate bias, the impact of the metal on the chann…
Chemical Doping and Electron-Hole Conduction Asymmetry in Graphene Devices
Damon B. Farmer, Roksana Golizadeh-Mojarad, Vasili Perebeinos +4
We investigate polyethylene imine and diazonium salts as stable, complementary dopants on graphene. Transport in graphene devices doped with these molecules exhibits asymmetry in e…
Atomistic Non-equilibrium Green s Function Simulations of Graphene Nano-Ribbons in the Quantum Hall Regime
Roksana Golizadeh-Mojarad, A. N. M. Zainuddin, Gerhard Klimeck +1
The quantum Hall effect in Graphene nano-ribbons (GNR) is investigated with the non-equilibrium Green s function (NEGF) based quantum transport model in the ballistic regime. The n…
Non-equilibrium Green s function based model for dephasing in quantum transport
Roksana Golizadeh-Mojarad, Supriyo Datta
The objective of this paper is to describe a simple phenomenological approach for including incoherent dephasing processes in quantum transport models. The presented illustrative n…
Effect of contact induced states on minimum conductivity in graphene
Roksana Golizadeh-Mojarad, Supriyo Datta
The objective of this paper is to point out that contact induced states can help explain the structure dependence of the minimum conductivity observed experimentally even if the sa…
Spin-Hall Effect: From the Ballistic to the Diffusive Regime
Roksana Golizadeh-Mojarad, Supriyo Datta
The spin-Hall effect has recently attracted a lot of attention and a central question is whether the effect is due to the intrinsic spin-orbit interaction or due to spin-asymmetric…