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On the nature of inhomogeneous weak localization of charge carriers in the heavy fermion compound CeB6 |
| A N Azarevich1, A V Bogach1, O N Khrykina2, N B Bolotina2, V M Gridchina2, S Yu Gavrilkin3, A Yu Tsvetkov3, V V Voronov1, K Flachbart4, S Gabani4, and N E Sluchanko1,† |
1 Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia;
2 Kurchatov Complex of Crystallography and Photonics, National Research Center Kurchatov Institute, Moscow, Russia;
3 Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia;
4 Institute of Experimental Physics of the Slovak Academy of Sciences, Kosice, Slovakia |
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Abstract Fine details of the electron density distribution in the heavy fermion metal CeB6 have been studied for the first time by precision x-ray diffraction experiments in the temperature range of 30-500 K. At temperatures between 30 K and 80 K, the formation of dynamic charge stripes along the 〈100〉 axes is observed in B6 clusters, corresponding to gapless (weak) localization of charge carriers. Based on the achieved results, we assume that the spin-polarized 5d-2p electronic states in the conduction band are partially localized within these charge stripes and between vibrationally coupled Ce-Ce pairs. Moreover, results of thermal conductivity, heat capacity, Seebeck coefficient and resistivity measurements indicate a significant role of polaron-phonon scattering, which causes inhomogeneous weak localization of charge carriers in CeB6.
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Received: 17 May 2025
Revised: 04 July 2025
Accepted manuscript online: 15 August 2025
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PACS:
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72.15.Rn
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(Localization effects (Anderson or weak localization))
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72.15.Qm
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(Scattering mechanisms and Kondo effect)
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71.27.+a
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(Strongly correlated electron systems; heavy fermions)
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| Fund: S.G. and K.F. acknowledge the support of the Slovak Research and Development Agency under contract No. APVV-23-0226 and VEGA 2/0034/24. |
Corresponding Authors:
N E Sluchanko
E-mail: nes@lt.gpi.ru
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Cite this article:
A N Azarevich, A V Bogach, O N Khrykina, N B Bolotina, V M Gridchina, S Yu Gavrilkin, A Yu Tsvetkov, V V Voronov, K Flachbart, S Gabani, and N E Sluchanko On the nature of inhomogeneous weak localization of charge carriers in the heavy fermion compound CeB6 2026 Chin. Phys. B 35 037202
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