Nonlinear transport through interacting single-wall nanotubes containing a few impurities is studied theoretically. Extending the Luttinger liquid theory to incorporate trigonal warping and chirality effects, we derive the current contribution Ie even in the applied voltage V and odd in an orbital magnetic field B, which is nonzero only for chiral tubes and in the presence of interactions.

A mixture of dissipative hard grains generically exhibits a breakdown of kinetic energy equipartition. The undriven and thus freely cooling binary problem, in the tracer limit where the density of one species becomes minute, may exhibit an extreme form of this breakdown, with the minority species carrying a finite fraction of the total kinetic energy of the system. We investigate the fingerprin...

We simulate the formation of experimentally observed trapezoidal hillocks on etched Si(110) surfaces, describing their generic geometrical shape and analyzing the relative stability and/or reactivity of the key surface sites. In our model, the hillocks are stabilized by Cu impurities in the etchant adsorbing on the surface and acting as pinning agents. A model of random adsorptions will not res...

We present a theoretical study of electronic states in topological insulators with impurities. Chiral edge states in 2d topological insulators and helical surface states in 3d topological insulators show a robust transport against nonmagnetic impurities. Such a nontrivial character inspired physicists to come up with applications such as spintronic devices [1], thermoelectric materials [2], pho...

We study the transport properties of graphene nanoribbons of standardized 30 nm width and varying lengths. We find that the extent of the gap observed in transport as a function of Fermi energy in these ribbons the “transport gap” does not have a strong dependence on ribbon length, while the extent of the gap as a function of source-drain voltage the “source-drain gap” increases with increasing...

The effects of boron and nitrogen doping on the transport properties of zigzag-edged graphene nanoribbons ZGNRs with antiferromagnetically coupled edge states are investigated by first-principles electronic structure combined with a nonequilibrium Green’s function technique. Specifically, the effects produced by single and multiple impurities as a function of their distance from the edges are a...

The role of aggregation and isomeric impurities on the excited state mechanisms in crystalline carbazole are revisited considering exciton, Dexter energy transfer electron transport based Marcus Marcus–Levich–Jortner theories.

In recent years, a large number of mathematical models water quality have been developed which can be used for predictive calculations under certain conditions. This work is mainly devoted to the mechanical aspects substances transport in watercourse systems. It practically possible quickly determine concentration impurities river only by methods modelling transport.