Volume 61, Number 1, January 2003
|Page(s)||116 - 121|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 January 2003|
Conduction electron spin resonance in x
Department of Physics, National Technical
University of Athens 157 80 Athens, Greece
2 Institute of Materials Science, NCSR Demokritos 153 10 Aghia Paraskevi, Athens, Greece
3 School of Chemistry, Physics and Environmental Science University of Sussex - Brighton BN1 9QJ, UK
Accepted: 14 October 2002
Conduction electron spin resonance is employed to study the interplay of the electronic and structural properties in the normal state of x alloys as a function of -doping for . The x-dependence of the spin susceptibility reveals considerable reduction of the total density of states with increasing concentration, complying with theoretical predictions for a predominant filling effect of the hole σ bands by electron doping. The CESR linewidth exhibits significant broadening, especially prominent in the high--content region, indicative of the presence of enhanced structural disorder, consistent with the presence of compositional fluctuations.
PACS: 74.70.Ad – Metals; alloys and binary compounds (including A15, Laves phases, etc.) / 76.30.Pk – Conduction electrons / 74.62.Dh – Effects of crystal defects, doping and substitution
© EDP Sciences, 2003
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