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TT: Fachverband Tiefe Temperaturen

TT 31: Transport: Nanoelectronics I - Quantum Dots, Wires, Point Contacts 2

TT 31.4: Vortrag

Donnerstag, 28. Februar 2008, 12:45–13:00, EB 202

Is spin-charge separation observable in transport experiments? — •Tobias Ulbricht¹ and Peter Schmitteckert² — ¹Institut für Theorie der Kondensierten Materie, Karlsruhe Insitute of Technology, Germany — ²Institute of Nanotechnology, Karlsruhe Insitute of Technology, Germany

We consider a one-dimensional chain consisting of an interacting area coupled to non-interacting leads. Within the area, interaction is mediated by a local onsite repulsion. Using real time evolution within the Density Matrix Renormalization Group (DMRG) scheme, we study the dynamics of wave packets in a two-terminal transport setup. In contrast to previous works, where excitations were created by adding potentials to the Hamiltonian, we explicitely create right moving single particle excitations in the left lead as the starting condition.