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Evidence from heat conductivity for normal-conducting chains in the high Tc super- conductor YBa2Cu3O6.9

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Citation

Petersen, K., Arnold, S., Bredl, C. D., Sparn, G., Steglich, F., Takahashi, S., et al. (1991). Evidence from heat conductivity for normal-conducting chains in the high Tc super- conductor YBa2Cu3O6.9. Physica C, 185, 1363-1364. doi:10.1016/0921-4534(91)91905-J.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0019-D6E2-A
Abstract
The thermal conductivity at T < 0.5K parallel to the CuO2 planes in single crystalline YBa2Cu3O6.9 can be decomposed as kappa-a,b(T) = kappa-phonon(T) + A.T, while kappa-c(T) = kappa-phonon(T). This is explained by a model calculation, assuming that superconductivity is generated in the CuO2 layers and weak superconductivity is induced in the CuO chains by the proximity effect.