Millikelvin studies of mixed-valence HgSe : Fe

Resistivity and magnetic susceptibility measurements of HgSe:Fe have been performed down to 30 mK and in the magnetic field range 50 mOe-3 kOe. Previously observed high conductivities of HgSe:Fe in the mixed valence region of Fe donors have been found to remain unchanged down to the lowest measured...

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Veröffentlicht in:	Journal of low temperature physics 1990-07, Vol.80 (1-2), p.15-29
Hauptverfasser:	LENARD, A, DIETL, T, SAWICKI, M, DOBROWOLSKI, W, DYBKO, K, SKOSKIEWICZ, T, PLESIEWICZ, W, MIOTJKOWSKA, S, WITEK, A, MYCIELSKI, A
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Conductivity phenomena in semiconductors and insulators Electronic transport in condensed matter Exact sciences and technology Low-field transport and mobility piezoresistance Physics
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Beschreibung
Zusammenfassung:	Resistivity and magnetic susceptibility measurements of HgSe:Fe have been performed down to 30 mK and in the magnetic field range 50 mOe-3 kOe. Previously observed high conductivities of HgSe:Fe in the mixed valence region of Fe donors have been found to remain unchanged down to the lowest measured temperatures. This points to a weak k-d hybridization and substantiates classification of HgSe:Fe as an inhomogeneous mixed-valence system in which intersite Coulomb interactions impose spatial correlations in positions of charged centers.
ISSN:	0022-2291 1573-7357
DOI:	10.1007/BF00683112