TITLE

Charge and spin dynamics in VO2 nanorods

AUTHOR(S)
Kyu Won Lee; Hyocheon Kweon; Jitae Park; Cheol Eui Lee
PUB. DATE
June 2009
SOURCE
Applied Physics Letters;6/8/2009, Vol. 94 Issue 23, p233111
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Electrical conductivity and photoconductivity measurements were carried out on vanadium dioxide (VO2) nanorods prepared by the hydrothermal treatment of vanadium pentoxide gels. While the structural properties of the nanorods resembled those of the Cr-doped VO2, the charge and spin dynamics appears to resemble those of the Nb-doped VO2. The magnetic and (photo)electrical properties of the nanorods can be understood in terms of localization of itinerant electrons giving rise to a spin-polarized (S=3/2) V4+ pair, dominant at higher temperatures, or to a (S=1) V3+ ion out of a V4+ ion pair, dominant at lower temperatures.
ACCESSION #
41573047

 

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