Quantum transport has far-reaching applications in modern electronics as it enables the control of currents nanoscale systems such quantum dots. In this paper we introduce tinie: a state-of-the-art simulation framework, which can efficiently perform first-principle calculations based on Landauer-B\"uttiker formalism. The computational repertoire tinie includes transmission, conductivity, and ru...

this article explain unsuccessful iranian intellectuals' attempts in the fields of thoughts and politics through surveying ideas of ehsan tabari and jalal ale-ahmad. it tries to show that theirs ideas have been under hegemony of political formalism; so their naïve attitudes has converted their thought to an ideology which serve to political aims based on a political formalism. this article...

I will discuss several distinct reasons for why present DFT calculations of transport, which combine ground-state DFT and the Landauer formula, might be highly inaccurate. (1) Even within the standard approach, common approximate functionals do not include a derivative discontinuity or correct for self-interaction. This can both misalign levels and broaden resonance peaks when a molecule is wea...

We propose that the Hawking radiation energy and entropy flow rates from a black hole can be viewed as a one-dimensional (1D), nonequilibrium Landauer transport process. Support for this viewpoint comes from previous calculations invoking conformal symmetry in the near-horizon region, which give radiation rates that are identical to those of a single 1D quantum channel connected to a thermal re...

Using the Landauer-Büttiker formalism, we calculate the effect of structural twist on electron transport in conducting carbon nanotubes. We demonstrate that even a localized region of twist scatters the propagating π electrons and induces the opening of a (pseudo-) gap near the Fermi level. The subsequent conductance reduction may be compensated by an applied axial magnetic field, leading to a ...

In rare or undiagnosed diseases, physicians rely upon genotype and phenotype information in order to compare abnormalities to other known cases and to inform diagnoses. Patients are often the best sources of information about their symptoms and phenotypes. The Human Phenotype Ontology (HPO) contains over 12,000 terms describing abnormal human phenotypes. However, the labels and synonyms in the ...

We study the conductance threshold of clean nearly straight quantum wires in which an electron is bound. We show that such a system exhibits spin-dependent conductance structures on the rising edge to the first conductance plateau, one near 0.25(2e 2 /h), related to a singlet resonance, and one near 0.75(2e 2 /h), related to a triplet resonance. As a quantitative example we solve exactly the sc...