Dresden 2009 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 2: Transport: Nanoelectronics I - Quantum Dots and Wires, Point Contacts 1

TT 2.6: Vortrag

Montag, 23. März 2009, 11:45–12:00, HSZ 301

Nonequilibrium Transport in the Interacting Resonant Level Model — •Peter Schmitteckert — Institut für Nanotechnologie, KIT, Karlsruhe, Germany

The Density Matrix Renormalization Group (DMRG) method is now a well established method to study interacting, low-dimensional quantum systems. In this talk I review the linear conductance calculations of the Kubo approach and the finite bias conductance calculations from real time simulations within DMRG. I will then discuss the finite bias conductance of the interacting resonant level model and compare to analytical calculations based on integrability in the continuum limit. The two approaches are in excellent agreement, and uncover among other things a power law decay of the current at large voltages when U>0.

[1] Edouard Boulat, Hubert Saleur, and Peter Schmitteckert, Twofold Advance in the Theoretical Understanding of Far-From-Equilibrium Properties of Interacting Nanostructures, Phys. Rev. Lett. 101, 140601 (2008).