Helical spin-density wave in doped V2O3

TL;DR

This paper explains the helical spin-density wave observed in doped V2O3 using band structure calculations and mean field theory, aligning with recent experimental findings on its magnetic structure.

Contribution

It demonstrates that the observed helical spin structure in doped V2O3 can be explained by an Overhauser spin-density wave state based on band structure and mean field analysis.

Findings

Agreement between experiments and mean field results for spin-density wave

Influence of finite lifetime and impurities discussed

Supports itinerant antiferromagnetism in doped V2O3

Abstract

Recent neutron scattering and nuclear magnetic resonance experiments have revealed that the low temperature phase of doped V_{2-y}O_3 is an itinerant antiferromagnet with a helical spin structure. We use a band structure calculation as the point of departure to show that these experiments are in agreement with mean field results for an Overhauser spin-density wave state. The influences of a finite life-time and of dilute magnetic impurities are discussed.