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TT: Tiefe Temperaturen

TT 20: Transport: Nanoelectronics I - Quantum Dots, Wires, Point Contacts - Part 2

TT 20.5: Vortrag

Dienstag, 28. März 2006, 15:15–15:30, HSZ 105

Differential Conductance using Real-Time Dynamics in DMRG — •Peter Schmitteckert and Günter Schneider — Institut für Theorie der Kondensierten Materie, Universität Karlsruhe, Germany

In this work we apply the Real-Time Density-Matrix-Renormalization Group Method (RT-DMRG) to calculate the differential conductance of an interacting nano-structure attached to one-dimensional, non-interacting leads. We first discuss our approach to extract the differential conductance. We then explain the difficulties arising from finite size effects, and how they can be addressed. Finally, we present results for the linear conductance vs. an applied gate voltage and the non-equilibrium differential conductance vs. source-drain voltage for weakly and strongly interacting nano-structures.