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6 papers · 2 filters
Decoherence induced deformation of the ground state in adiabatic quantum computation
Qiang Deng, Dmitri V. Averin, Mohammad H. Amin +1
Despite more than a decade of research on adiabatic quantum computation (AQC), its decoherence properties are still poorly understood. Many theoretical works have suggested that AQ…
Spin polarization and g-factor enhancement in graphene nanoribbons in magnetic field
S. Ihnatsenka, I. V. Zozoulenko
We provide a systematic quantitative description of spin polarization in armchair and zigzag graphene nanoribbons in a perpendicular magnetic field. We first address spinless elect…
Scanning tunneling spectroscopy and Dirac point resonances due to a single Co adatom on gated graphene
Alireza Saffarzadeh, George Kirczenow
Based on the standard tight-binding model of the graphene -band electronic structure, the extended Hückel model for the adsorbate and graphene carbon atoms, and spin splittings…
Tight Binding Model of Mn12 Single Molecule Magnets: Electronic and Magnetic Structure and Transport Properties
Fatemeh Rostamzadeh Renani, George Kirczenow
We describe and analyze a tight-binding model of single molecule magnets (SMMs) that captures both the spin and spatial aspects of the SMM electronic structure. The model generaliz…
Electronic and optical spectra in a diluted magnetic semiconductor multilayer
Leili Gharaee, Alireza Saffarzadeh
The effects of random distribution of magnetic impurities with concentration in a semiconductor alloy multilayer at a paramagnetic temperature are investigated by means of cohe…
Conductance quantization in graphene nanoconstrictions with mesoscopically smooth but atomically stepped boundaries
S. Ihnatsenka, G. Kirczenow
We present the results of million atom electronic quantum transport calculations for graphene nanoconstrictions with edges that are smooth apart from atomic scale steps. We find co…