Research/Sitter/MAGNDATA / 0.927_Nd2PdGe6.mcif

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Spin lattice of Nd2Pd1Ge6Spin lattice of Nd2Pd1Ge6

Nd2Pd1Ge6

MAGNDATA entry 0.927 · 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 ≤ 6.5 K (−267 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.
Structure · 11 properties
Magnetic groupC m′ c′ a BNS 64.474
Point groupm′m′m
Parent space groupC m c e No. 64
Spinscollinear · 2 nodal planes · net moment 0 μB per cell
Propagation[0 0 0] 1k
Cella 8.3099 · b 8.1588 · c 21.9964 Å · α 90° · β 90° · γ 90°
Transition6.5 K (−267 °C)
Measured at1.5 K
Magnetic ionsNd
Largest moment component2.11 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 C m′ c′ a →
Atom sites · 7 sites · CSV
siteelementxyzmambmc|m| (μB)
Nd1Nd0.25320.38230.082302.1102.11
Pd1Pd00.13430.1438
Ge1Ge0.27630.11230.194
Ge2Ge00.11380.4612
Ge3Ge00.11280.0285
Ge4Ge00.3440.3099
Ge5Ge00.3990.1994

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

B. Penc et al. Journal of Magnetism and Magnetic Materials (2020) · doi:10.1016/j.jmmm.2020.167152

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.927_Nd2PdGe6.mcif from MAGNDATA · entry page

sha256 of this copy: 639f63ae0a42fa66fdb8ac81d25b0502c6faf4846475f7dea2892abd6ddb4896
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.927_Nd2PdGe6.mcif.