Peculiar roles of spins in the thermal conductivity of pure and doped La_{2}CuO_{4}: Comparison with CuGeO_{3}

Details Peculiar roles of spins in the thermal conductivity of pure and doped La_{2}CuO_{4}: Comparison with CuGeO_{3} Peculiar roles of spins in the thermal conductivity of pure and doped La_{2}CuO_{4}: Comparison with CuGeO_{3}

2003-04-25

arxiv.org/abs/cond-mat/0304569v1

Physica B Vol. 329-333, p. 689 (2003)

Physics

Condensed Matter

Superconductivity

2 pages, 2 figures, invited paper at LT23 Conference

Scientific paper

10.1016/S0921-4526(02)01994-4

In-plane and out-of-plane thermal conductivities (\kappa_{ab} and \kappa_{c}) are measured on single crystals of pure, 1%-hole-doped, and 1%-Zn-doped La_{2}CuO_{4}. The roles of magnons and the spin stripes in the heat transport in these samples are discussed. Comparison with the heat transport in CuGeO_{3}, which shows similar \kappa(T) behavior as that of La_{2}CuO_{4}, gives us a lesson of how the heat transport can probe the difference in the spin ground state.

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