On the problem of the Kondo-lattice model application to CeB6

N. E. Sluchanko; A. V. Bogach; V. V. Glushkov; S. V. Demishev; M. I. Ignatov; Yu. B. Paderno; N. A. Samarin; N. Yu. Shitsevalova

arXiv · cond-mat/0505475

On the problem of the Kondo-lattice model application to CeB6

N. E. Sluchanko·A. V. Bogach·V. V. Glushkov·S. V. Demishev·M. I. Ignatov·Yu. B. Paderno·N. A. Samarin·N. Yu. Shitsevalova

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Abstract

Precision measurements of charge transport parameters (resistivity, Hall and Seebeck coefficients) have been carried out on high-quality single-crystals of cerium hexaboride in a wide temperature range 1.8-300 K. It is shown that in the temperature interval of 5 K < T < T* = 80 K the magnetic contribution in resistivity obeys the power law rm = T -1/n, which corresponds to the regime of weak localization of charge carriers with the critical index 1/n = 0.39 +- 0.02. In the same temperature interval an asymptotic behavior of thermopower S = -lnT is found together with an essential decrease of the charge carriers mobility in CeB6. A negative Hall coefficient anomaly has been detected at liquid helium temperatures. The data obtained are compared with the results predicted by the Kondo-lattice model and discussed also in terms of the theory of excitonic ferromagnetism.

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N. E. Sluchanko, A. V. Bogach, V. V. Glushkov, S. V. Demishev, M. I. Ignatov, Yu. B. Paderno, N. A. Samarin, N. Yu. Shitsevalova. 2005-05-19. On the problem of the Kondo-lattice model application to CeB6. https://arxiv.org/abs/cond-mat/0505475

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