Kondo-like behavior in ThAsSe and UAsSe

Diamagnetic ThAsSe and ferromagnetic UAsSe display negative temperature coefficients of the electrical resistivity over extended temperature ranges. Electron-diffraction studies show that As–As dimerizations within the As layers cause this Kondo-like behavior in ThAsSe and do also contribute in UAsS...

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Veröffentlicht in:	Journal of magnetism and magnetic materials 2007-03, Vol.310 (2), p.1778-1780
Hauptverfasser:	Schoenes, J., Withers, R.L., Hulliger, F.
Format:	Artikel
Sprache:	eng
Schlagworte:	Actinides Condensed matter: electronic structure, electrical, magnetic, and optical properties Diamagnetism, paramagnetism and superparamagnetism Dimerization Exact sciences and technology Kondo effect Local moment in compounds and alloys kondo effect, valence fluctuations, heavy fermions Magnetic properties and materials Magnetically ordered materials: other intrinsic properties Physics Superstructures Valence fluctuation, kondo lattice, and heavy-fermion phenomena
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Beschreibung
Zusammenfassung:	Diamagnetic ThAsSe and ferromagnetic UAsSe display negative temperature coefficients of the electrical resistivity over extended temperature ranges. Electron-diffraction studies show that As–As dimerizations within the As layers cause this Kondo-like behavior in ThAsSe and do also contribute in UAsSe. We suggest that a coupling between neighboring As layers at the lowest temperatures may be at the origin of a second Kondo-like regime below ≈15 K.
ISSN:	0304-8853
DOI:	10.1016/j.jmmm.2006.10.672