Dzyaloshinskii-Moriya interaction in NaV$_2$O$_5$: a microscopic study

Details Dzyaloshinskii-Moriya interaction in NaV$_2$O$_5$: a microscopic study Dzyaloshinskii-Moriya interaction in NaV$_2$O$_5$: a microscopic study

2000-06-02

arxiv.org/abs/cond-mat/0006036v1

Phys. Rev. B, Vol.62, 14 164 (2000)

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages, 1 figure

Scientific paper

10.1103/PhysRevB.62.14164

We present a unified account of magnetic exchange and Raman scattering in the quasi-one-dimensional transition-metal oxide NaV$_2$O$_5$. Based on a cluster-model approach explicit expressions for the exchange integral and the Raman-operator are given. It is demonstrated that a combination of the electronic-structure and the Dzyaloshinskii-Moriya interaction, allowed by symmetry in this material, are responsible for the finite Raman cross-section giving rise to both, one- and two-magnon scattering amplitudes.

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