title: Co[V2]o4: a spinel approaching the itinerant electron limit.
abstract: Studies of the structure, magnetization, and resistivity under pressure on stoichiometric normal spinel Co[V(2)]O(4) single crystals show (i) absence of a structural distortion, (ii) abnormal magnetic critical exponents, and (iii) metallic conductivity induced by pressures at low temperatures. All these results prove that Co[V(2)]O(4) sits on the edge of the itinerant-electron limit. Compared with similar measurements on Fe[V(2)]O(4) and other A[V(2)]O(4) studies, it is shown that a critical V-V separation for a localized-itinerant electronic phase transition exists.
authors.affiliation: National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32306-4005, USA.
authors.forename: A
authors.initials: A
authors.lastname: Kismarahardja
authors.forename: J S
authors.initials: JS
authors.lastname: Brooks
authors.forename: A
authors.initials: A
authors.lastname: Kiswandhi
authors.forename: K
authors.initials: K
authors.lastname: Matsubayashi
authors.forename: R
authors.initials: R
authors.lastname: Yamanaka
authors.forename: Y
authors.initials: Y
authors.lastname: Uwatoko
authors.forename: J
authors.initials: J
authors.lastname: Whalen
authors.forename: T
authors.initials: T
authors.lastname: Siegrist
authors.forename: H D
authors.initials: HD
authors.lastname: Zhou