Unusual evolution of the conduction-electron state in CexLa1-xB6 from non-Fermi liquid to Fermi liquid

We report unusual evolution of the conduction-electron state in the localized f electron system CexLa1-xB6 from normal electron state to heavy Fermi liquid (FL) state through local FL and non-FL states with increasing Ce concentration and/or with increasing magnetic field. The effective mass of quas...

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Bibliographic Details
Published in:Physical review letters 2006-12, Vol.97 (23), p.237204-237204
Main Authors: Nakamura, S, Endo, M, Yamamoto, H, Isshiki, T, Kimura, N, Aoki, H, Nojima, T, Otani, S, Kunii, S
Format: Article
Language:English
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Summary:We report unusual evolution of the conduction-electron state in the localized f electron system CexLa1-xB6 from normal electron state to heavy Fermi liquid (FL) state through local FL and non-FL states with increasing Ce concentration and/or with increasing magnetic field. The effective mass of quasiparticle or the coefficient A of T2 term of resistivity is found to increase divergently near the boundary between FL state and non-FL state. The features of the non-FL state are also different from those of the typical non-FL systems previously observed or theoretically predicted.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.97.237204