منابع مشابه
Quantum Critical Point in Heavy Fermions
The concept that heavy fermions are close to a quantum critical point and that this proximity determines their physical behavior has opened new perspectives in the study of these systems. It has provided a new paradigm for understanding and probing the properties of these strongly correlated materials. Scaling ideas were important to establish this approach. We give below a brief and personal a...
متن کاملSpin Dynamics near the Quantum Critical Point of Heavy-Fermions
The dynamical spin susceptibility is studied in the magnetically-disordered phase of heavy-Fermion systems near the antiferromagnetic quantum phase transition. In the framework of the S = 1/2 Kondo lattice model, we introduce a perturbative expansion treating the spin and Kondo-like degrees of freedom on an equal footing. The general expression of the dynamical spin susceptibility that we deriv...
متن کاملCritical phenomena near the antiferromagnetic quantum critical point of Heavy - Fermions
We present a study of the critical phenomena around the quantum critical point in heavy-fermion systems. In the framework of the S = 1/2 Kondo lattice model, we introduce an extended decoupling scheme of the Kondo interaction which allows one to treat the spin fluctuations and the Kondo effect on an equal footing. The calculations, developed in a self-consistent one-loop approximation, lead to ...
متن کاملCritical phenomena near the antiferromagnetic quantum critical point of Heavy -
We present a study of the critical phenomena around the quantum critical point in heavy-fermion systems. In the framework of the S = 1/2 Kondo lattice model, we introduce an extended decoupling scheme of the Kondo interaction which allows one to treat the spin fluctuations and the Kondo effect on an equal footing. The calculations, developed in a self-consistent one-loop approximation, lead to ...
متن کاملQuantum Critical Point of Itinerant Antiferromagnet in Heavy Fermion
H. Kadowaki, Y. Tabata, M. Sato, N. Aso, S. Raymond, and S. Kawarazaki Department of Physics, Tokyo Metropolitan University, Hachioji-shi, Tokyo 192-0397, Japan Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan MSD, JASRI, 1-1-1 Kouto Mikazuki-cho Sayo-gun, Hyogo 679-5198, Japan NSL, Institute for Solid State Physics, University of Tokyo, Tokai, Ibaraki 319-1106, Jap...
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ژورنال
عنوان ژورنال: Brazilian Journal of Physics
سال: 2005
ISSN: 0103-9733
DOI: 10.1590/s0103-97332005000100018