| Autor: |
Sergey Demishev, N. E. Sluchanko, M.I. Ignatov, Yu. B. Paderno, A. V. Bogach, N. Yu. Shitsevalova, V. V. Glushkov |
| Rok vydání: |
2006 |
| Předmět: |
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| Zdroj: |
Physica B: Condensed Matter. :780-781 |
| ISSN: |
0921-4526 |
| DOI: |
10.1016/j.physb.2006.01.284 |
| Popis: |
A detailed study of resistivity (ρ), Hall (RH) and Seebeck (S) coefficients for high-quality single crystals of CeB6 has been carried out in a wide range of temperatures 1.8–300 K. An anomalous behavior of all transport characteristics (ρ, RH, S) was found in the vicinity of T*≈80 K for a first time. The strong increase of resistivity ρ which follows to a weak localization relation ρ∼T−1/η (critical index 1 / η = 0.39 ± 0.02 ) in the interval 7–80 K as well as an unusual asymptotic behavior of Seebeck coefficient S(T)≃lg T and the pronounced (∼3 times) reduction of the Hall mobility μH values observed below T* allowed us to conclude in favor of crossover between different regimes of charge carriers transport in CeB6 at T*. The low temperature anomalies of the charge transport characteristics are compared with the predictions of the Kondo-lattice model. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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