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Figure 7
The incommensurate magnetic structure of CeRhIn5 (#1.1.16; Bao et al., 2000BB3), with helical spin modulations that are symmetry dictated by the superspace symmetry of the phase. Only Ce atoms are shown. The label of its MSSG is indicated. The space group of the paramagnetic phase is P4/mmm and the incommensurate propagation vector is of type [({1\over 2}, {1\over 2}, \gamma)]. The spin modulation breaks space inversion but maintains a non-polar point-group symmetry. This MSSG is one of seven possible for the magnetic order parameter active in this phase, corresponding to a four-dimensional irrep.

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APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 49| Part 6| December 2016| Pages 1941-1956
https://doi.org/10.1107/S1600576716015491
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