Symmetry of Magnetically Ordered Quasicrystals

Details Symmetry of Magnetically Ordered Quasicrystals Symmetry of Magnetically Ordered Quasicrystals

1998-01-29

arxiv.org/abs/cond-mat/9801296v1

Phys. Rev. Lett. 80, 2717 (1998).

Physics

Condensed Matter

Materials Science

5 pages. Accepted for publication in Phys. Rev. Letters

Scientific paper

10.1103/PhysRevLett.80.2717

The notion of magnetic symmetry is reexamined in light of the recent observation of long range magnetic order in icosahedral quasicrystals [Charrier et al., Phys. Rev. Lett. 78, 4637 (1997)]. The relation between the symmetry of a magnetically-ordered (periodic or quasiperiodic) crystal, given in terms of a ``spin space group,'' and its neutron diffraction diagram is established. In doing so, an outline of a symmetry classification scheme for magnetically ordered quasiperiodic crystals is provided. Predictions are given for the expected diffraction patterns of magnetically ordered icosahedral crystals, provided their symmetry is well described by icosahedral spin space groups.

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