Signal transport in and conductance of correlated nanostructures
Peter Schmitteckert
TL;DR
This paper explores the use of time-dependent DMRG for strongly correlated systems and examines conductance calculations in the interacting resonant level model, highlighting accuracy issues and methodological applications.
Contribution
It demonstrates the limitations of previous DMRG simulations in spin charge separation and applies the Kubo formula to conductance in a new context.
Findings
Previous DMRG simulations had over 100% error in spin sector.
Kubo formula effectively computes linear conductance in the interacting resonant level model.
Highlights challenges in simulating strongly correlated nanostructures.
Abstract
Here we report on our project concerning the application of time dependent DMRG to strongly correlated systems. We show that a previously reported simulation of the spin charge separation in a one-dimensional Hubbard system exceeds a relative error of 100% in the spin sector. In the second part we discuss the application of the Kubo formula to obtain linear conductance for the interacting resonant level model.
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Taxonomy
TopicsQuantum and electron transport phenomena · Molecular Junctions and Nanostructures · Surface and Thin Film Phenomena