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6 papers · 2 filters
Electron interaction, charging and screening in grain boundaries in graphene
S. Ihnatsenka, I. V. Zozoulenko
Electronic, transport, and spin properties of grain boundaries (GBs) are investigated in electrostatically doped graphene at finite electron densities within the Hartree and Hubbar…
Density of States Scaling at the Semimetal to Metal Transition in Three Dimensional Topological Insulators
Koji Kobayashi, Tomi Ohtsuki, Ken-Ichiro Imura +1
The quantum phase transition between the three dimensional Dirac semimetal and the diffusive metal can be induced by increasing disorder. Taking the system of disordered $\mathbb{Z…
Effect of edge reconstruction and electron-electron interactions on quantum transport in graphene nanoribbons
S. Ihnatsenka, G. Kirczenow
We present numerical studies of conduction in graphene nanoribbons with reconstructed edges based on the standard tight-binding model of the graphene and the extended Huckel model…
Topological insulators in strained graphene at weak interaction
Bitan Roy, Igor F. Herbut
The nature of the electronic ground states in strained undoped graphene at weak interaction between electrons is discussed. After providing a lattice realization of the strain-indu…
Voltage-controlled spin injection with an endohedral fullerene CoC dimer
Alireza Saffarzadeh, George Kirczenow
Spin-dependent transport through an endohedral fullerene Co@C dimer with gold electrodes is explored theoretically using density functional and extended Hückel theory. Densi…
Switching of a Quantum Dot Spin Valve by Single Molecule Magnets
Fatemeh Rostamzadeh Renani, George Kirczenow
We explore theoretically the spin transport in nanostructures consisting of a gold quantum dot bridging nonmagnetic electrodes and two Mn12-Ph single molecule magnets (SMMs) that a…