We study mechanism of magnetic energy transport, motivated by recent measurements of the thermal conductivity in low dimensional quantum magnets. We point out a possible mechanism of enhancement of the thermal conductivity in gapped magnetic system, where the magnetic energy transport plays a crucial role. This mechanism gives an interpretation for the recent experiment of CuGeO_3, where the thermal conductivity depends on the crystal direction.
@article{arxiv.cond-mat/0201392,
title = {Enhancement of the Thermal Conductivity in gapped Quantum Spin Chains},
author = {Keiji Saito and Seiji Miyashita},
journal= {arXiv preprint arXiv:cond-mat/0201392},
year = {2009}
}