Research/Sitter/MAGNDATA / 0.1066_MnSiN2.mcif

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Spin lattice of Mn1Si1N2Spin lattice of Mn1Si1N2

Mn1Si1N2

MAGNDATA entry 0.1066 · source
d-wave altermagnet
No net magnetisation, yet the electron bands are spin-split: the up and down spin sublattices are related only by a rotation or mirror, never by a shift or inversion. d-wave: the splitting changes sign twice around the Fermi surface (2 nodal planes).
Spin group ¹m²m²m: each symmetry marked ¹ keeps every spin, ² swaps up and down.
ordered ≤ 453 K (180 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.
Structure · 11 properties
Magnetic groupP n′ a 21′ BNS 33.146
Point groupm′m2′
Parent space groupP n a 21 No. 33
Spinscollinear · 2 nodal planes · net moment 0 μB per cell
Propagation[0 0 0] 1k
Cella 5.248 · b 6.511 · c 5.07 Å · α 90° · β 90° · γ 90°
Transition453 K (180 °C)
Measured at295 K
Magnetic ionsMn
Largest moment component3.8 μB
MethodNPD

Symmetry

Stereogram of the magnetic point group: each operation applied to one direction. Filled = upper hemisphere, ring = lower; red operations include time reversal. Lines are mirrors; polygons are 2/3/4/6-fold axes; the centre ring is inversion.

Every structure in P n′ a 21′ →
Atom sites · 4 sites · CSV
siteelementxyzmambmc|m| (μB)
Mn1Mn0.0720.6280.995003.83.8
Si1Si0.0710.130
N1N0.0550.0820.351
N2N0.1020.6550.41

Moment components are along the crystal axes a, b, c (μB), as magCIF writes them. Symmetry generates the rest of the cell from these sites.

Source

M. Wintenberger et al. Solid State Communications (1977) · doi:10.1016/0038-1098(77)91139-5

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.1066_MnSiN2.mcif from MAGNDATA · entry page

sha256 of this copy: a7d284ed4d882dca6f7f6a28f30a1910f9dd6cf6a43dc95f569c0f7adc42ccd4
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.1066_MnSiN2.mcif.