Magnetism and Kondo effect in strongly correlated electron systems

B. Coqblin; J. R. Iglesias; S. G. Magalhaes; N. B. Perkins; F. M. Zimmer

Magnetism and Kondo effect in strongly correlated electron systems

B. Coqblin, J. R. Iglesias, S. G. Magalhaes, N. B. Perkins, F. M. Zimmer

Physics and Astronomy (Twin Cities)

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3 Scopus citations

Abstract

We present here a review on three important problems of the Kondo lattice theory. First, the normal Kondo lattice effect has been extensively studied and accounts for many properties of cerium or ytterbium systems. Then, we present here a new theoretical study of the underscreened Kondo lattice problem, which can well account for the ferromagnetic - Kondo coexistence observed in some uranium compounds such as UTe. Finally, we discuss the spin glass-Kondo competition and the resulting phase diagrams showing spin glass, Kondo and magnetically ordered phases observed in disordered heavy fermion cerium alloys such as CeCu_xNi_1-x alloys.

Original language	English (US)
Pages (from-to)	1583-1594
Number of pages	12
Journal	Journal of Optoelectronics and Advanced Materials
Volume	10
Issue number	7
State	Published - Jul 2008

Keywords

CeCu Ni alloys
Kondo-effect
Strongly correlated electron systems
UTe

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T1 - Magnetism and Kondo effect in strongly correlated electron systems

AU - Coqblin, B.

AU - Iglesias, J. R.

AU - Magalhaes, S. G.

AU - Perkins, N. B.

AU - Zimmer, F. M.

PY - 2008/7

Y1 - 2008/7

N2 - We present here a review on three important problems of the Kondo lattice theory. First, the normal Kondo lattice effect has been extensively studied and accounts for many properties of cerium or ytterbium systems. Then, we present here a new theoretical study of the underscreened Kondo lattice problem, which can well account for the ferromagnetic - Kondo coexistence observed in some uranium compounds such as UTe. Finally, we discuss the spin glass-Kondo competition and the resulting phase diagrams showing spin glass, Kondo and magnetically ordered phases observed in disordered heavy fermion cerium alloys such as CeCuxNi1-x alloys.

AB - We present here a review on three important problems of the Kondo lattice theory. First, the normal Kondo lattice effect has been extensively studied and accounts for many properties of cerium or ytterbium systems. Then, we present here a new theoretical study of the underscreened Kondo lattice problem, which can well account for the ferromagnetic - Kondo coexistence observed in some uranium compounds such as UTe. Finally, we discuss the spin glass-Kondo competition and the resulting phase diagrams showing spin glass, Kondo and magnetically ordered phases observed in disordered heavy fermion cerium alloys such as CeCuxNi1-x alloys.

KW - CeCu Ni alloys

KW - Kondo-effect

KW - Strongly correlated electron systems

KW - UTe

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JF - Journal of Optoelectronics and Advanced Materials

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ER -

Magnetism and Kondo effect in strongly correlated electron systems

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