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Spin chirality induced by the Dzyaloshinskii-Moriya interaction and polarized neutron scattering

2000; American Physical Society; Volume: 62; Issue: 2 Linguagem: Inglês

10.1103/physrevb.62.r751

1095-3795

D. N. Aristov, S. V. Maleyev,

Physics of Superconductivity and Magnetism

We discuss the influence of the Dzyaloshinskii-Moriya (DM) interaction in the Heizenberg spin chain model for the observables in the polarized neutron-scattering experiments. We show that different choices of the parameters of DM interaction may leave the spectrum of the problem unchanged, while the observable spin-spin correlation functions may differ qualitatively. Particularly, for the uniform DM interaction one has the incommensurate fluctuations and polarization-dependent neutron scattering in the paramagnetic phase. We sketch the possible generalization of our treatment to higher dimensions.