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TT: Fachverband Tiefe Temperaturen

TT 34: Correlated Electrons: Metal-Insulator Transition 1

TT 34.6: Vortrag

Mittwoch, 28. März 2012, 17:45–18:00, H 3010

Heat transport in a disordered and interacting electron system — •Georg Schwiete¹ and Alexander Finkelstein^2,3 — ¹Dahlem Center for Complex Quantum Systems, Freie Universität Berlin, Germany — ²Texas A&M University, Texas, USA — ³The Weizmann Institute of Science, Rehovot, Israel

We study thermal conductivity in a disordered two dimensional electron gas at low temperatures. To this end we calculate the heat density correlation function. In comparison to the case of the well-studied charge density correlation function additional logarithmic corrections appear. Particular care is taken to confirm the compatibility of these corrections with the energy conservation law. The purpose of this study is to develop a renormalization group treatment for heat transport. This would allow to describe thermal transport near the metal-insulator transition.