Low Temperature Transport Properties of Strongly Interacting Systems- Thermal Conductivity of Spin-1/2 Chains

Details Low Temperature Transport Properties of Strongly Interacting Systems- Thermal Conductivity of Spin-1/2 Chains Low Temperature Transport Properties of Strongly Interacting Systems- Thermal Conductivity of Spin-1/2 Chains

2003-07-23

arxiv.org/abs/cond-mat/0307578v1

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 6 colored figures; to appear in the proceedings of "Highlights in CMP", May 2003, Salerno, Italy

Scientific paper

10.1063/1.1639599

We outline a general approach to the computation of transport properties of interacting systems at low temperetures and frequencies. We show that if the fixed point and the irrelevant operators around it are known, then by studying the structure of the softly violated conserved currents chracterizing the fixed point one may set up an effective calculation in terms of a memory matrix formalism. We apply this approach to the computation of thermal conductivity of spin chains embedded in a matter matrix and interacting with its phonons. The results are found to be in very good agreement with experiment.

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