Comment on "Anomalous Thermal Conductivity of Frustrated Heisenberg Spin Chains and Ladders"
Heidrich-Meisner, F. · Honecker, A. · Cabra, D. C. · Brenig, W.
Original · EN
In a recent letter [Phys. Rev. Lett. 89, 156603 (2002); cond-mat/0201300], Alvarez and Gros have numerically analyzed the Drude weight for thermal transport in spin ladders and frustrated chains of up to 14 sites and have proposed that it remains finite in the thermodynamic limit. In this comment, we argue that this conclusion cannot be sustained if the finite-size analysis is taken to larger system sizes.
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