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Dresden 2009 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 6: Postersession Correlated Electrons: (General) Theory, Low-Dimensional Systems, Kondo Physics, Heavy Fermions, Quantum-Critical Phenomena

TT 6.35: Poster

Monday, March 23, 2009, 13:00–16:45, P1A

Huge thermomagnetic and thermoelectric effects in Luttinger liquids and spin chains — •David Rasch1, Arti Garg2, Achim Rosch1, and Efrat Shimshoni31University of Cologne, Germany — 2Technion, Haifa, Israel — 3Bar-Ilan University, Ramat-Gan, Israel

The interplay of Umklapp scattering and weak disorder in Luttinger liquids and spin chains leads to strong effects in the field and doping dependence of transport quantities. We show that the thermal conductivity of spin chains as a function of a magnetic field B displays a pronounced dip for BT. In metallic systems, we predict large violations of the Wiedemann Franz law. Depending on the doping, the Wiedemann Franz ratio κ/(σ T) can become either very large or very small.

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