Atomic scale chemical fluctuation in LaSrVMoO6: A proposed halfmetallic antiferromagnet

Abstract

Half metallic antiferromagnets (HMAFM) have been proposed theoretically long ago but have not been realized experimentally yet. Recently, a double perovskite compound, LaSrVMoO6, has been claimed to be an almost real HMAFM system. Here, we report detailed experimental and theoretical studies on this compound. Our results reveal that the compound is neither a half metal nor an ordered antiferromagnet. Most importantly, an unusual chemical fluctuation is observed locally, which finally accounts for all the electronic and magnetic properties of this compound.

10 pages, 3 figures, 3 tables

References in corpus (2)

• Half Semimetallic Antiferromagnetism in the Sr${}_2$CrTO${}_6$ System, T=Os, Ru
• Robust half-metallic antiferromagnets La$A$VOsO${}_6$ and La$A$Mo$Y$O${}_6$ ($A$ = Ca, Sr, Ba; $Y$ = Re, Tc) from first-principles calculations

Cited by in corpus (5)

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• Evaluation of Half-metallic Antiferromagnetism in ${\mathcal{A}}_2$CrFeO${}_6$ ({$\mathcal{A}$}=La, Sr
• Compensated Half-metallicity in the Trigonally Distorted Perovskite-type NiCrO${}_3$
• Evaluation of Compensated Magnetism in La${}_2$VCuO${}_6$: Exploration of Charge States
• LaSrVMoO${}_6$: A case study for $A$-site covalency-driven local cationic order in double perovskites