A pr 1 99 9 The non - Fermi - liquid behavior in the Kondo lattices induced by peculiarities of magnetic ordering and spin dynamics
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چکیده
A scaling consideration of the Kondo lattices is performed with account of singularities in the spin excitation spectral function. It is shown that a non-Fermi-liquid (NFL) behavior occurs naturally for complicated magnetic structures with several magnon branches. Another kind of a NFL-like state (with different crytical exponents) can occur for paramagnets with two-dimensional character of spin fluctuations. This may explain the fact that a NFL behavior often takes place in the heavy-fermion systems with peculiar spin dynamics. The mechanisms proposed lead to some predictions about behavior of specific heat, magnetic susceptibility and anisotropy parameter, which can be verified experimentally.
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1 8 Ju l 1 99 9 Non - Fermi - liquid behavior in the Kondo lattices induced by peculiarities of magnetic ordering and spin dynamics
A scaling consideration of the Kondo lattices is performed with account of singularities in the spin excitation spectral function. It is shown that a non-Fermi-liquid (NFL) behavior between two critical values of the bare s − f coupling constant occurs naturally for complicated magnetic structures with several magnon branches. This may explain the fact that a NFL behavior takes place often in t...
متن کاملD ec 1 99 9 Non - Fermi - liquid behavior in the Kondo lattices induced by peculiarities of magnetic ordering and spin dynamics
A scaling consideration of the Kondo lattices is performed with account of singularities in the spin excitation spectral function. It is shown that a non-Fermi-liquid (NFL) behavior between two critical values of the bare s − f coupling constant occurs naturally for complicated magnetic structures with several magnon branches. This may explain the fact that a NFL behavior takes place often in t...
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