Heavy-fermion like behavior of amorphous CexMn100−xalloys system studied by55Mn NMR

Niki, H.; Okamura, Keisuke; Mahoe, R.; Yogi, Mamoru; Amakai, Yusuke; Takano, Hideaki; Murayama, S.; Obi, Y.

doi:10.1088/1742-6596/150/4/042142

Cited by 2 publications

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References 4 publications

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“…In the resistivity ρ for x ≥ 51, the -logT dependence has been observed at low temperature, which indicates the formation of the dense Kondo state. The low temperature resistivity for x ≥ 62 exhibits a maximum [6] shows that the spin-lattice relaxation rate 1/T 1 has almost T-linear dependence at low temperature, suggesting existence of the density of states of heavy fermion bands on the Fermi surface.…”

Section: Introductionmentioning

confidence: 96%

Magnetic properties of structure-disordered heavy fermion Ce-Mn alloys

Amakai

Murayama

Obi

et al. 2010

J. Phys.: Conf. Ser.

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La substitution effect to the heavy-fermion state in structure-disordered Ce-Ru alloys Y Amakai, D Yoshii, S Murayama et al. In the Ce-poor region of x ≤ 51, the low-temperature χ below 15 K exhibits a spin-glass transition. The spin-glass transition temperature T g decreases with increasing Ce-concentration. In the Ce-rich region of x ≥ 62, the spin-glass transition disappears and the CW paramagnetic behavior remains down to the low temperature limit. TheWeiss temperature θ is negative for all the samples and almost constant in the Ce-poor side. However, the absolute value of θ increases with increasing Ce-concentration in the Ce-rich region. We have interpreted this fact as an increase of the antiferromagnetic c-f coupling, namely the Kondo effect, with the Ce-concentration.

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Section: Introductionmentioning

confidence: 96%