Power-law spin correlations in pyrochlore antiferromagnets

By Christopher L. Henley. 2004

167 citations recorded by the source corpus.

The ground state ensemble of the highly frustrated pyrochlore-lattice antiferromagnet can be mapped to a coarse-grained ``polarization'' field satisfying a zero-divergence condition From this it follows that the correlations of this field, as well as the actual spin correlations, decay with separation like a dipole-dipole interaction ($1/|R|^3$). Furthermore, a lattice version of the derivation gives an approximate formula for spin correlations, with several features that agree well with simulations and neutron-diffraction measurements of diffuse scattering, in particular the pinch-point (pseudo-dipolar) singularities at reciprocal lattice vectors. This system is compared to others in which constraints also imply diffraction singularities, and other possible applications of the coarse-grained polarization are discussed.

Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/306329a8af77840234ea2ab3ef9d47f3b9888e0a

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In Condensed Matter Physics

1. Simon Trebst
2. Emanuel Gull
3. J. Alicea
4. L. Balents
5. Masatoshi Sato
6. Xiao-Liang Qi
7. Shoucheng Zhang
8. Y. Ando

In Electronic, Optical and Magnetic Materials

1. Simon Trebst
2. J. Alicea
3. L. Balents

Citations in the corpus

• Order-by-disorder and spiral spin-liquid in frustrated diamond-lattice antiferromagnets (2006, background): “2 ), and theoretically by the establishment of ‘dipolar’ correlation”