Research/Sitter/MAGNDATA / 0.1127_TmB4.mcif

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Spin lattice of Ho1Tm4Spin lattice of Ho1Tm4

Ho1Tm4

MAGNDATA entry 0.1127 · 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 ²4/¹m²m¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.
ordered ≤ 10 K (−263 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.
Structure · 11 properties
Magnetic groupP 4′/m b m′ BNS 127.391
Point group4′/mm′m
Parent space groupP 4/m b m No. 127
Spinscollinear · 2 nodal planes · net moment 0 μB per cell
Propagation[0 0 0] 1k
Cella 7.091 · b 7.091 · c 4.0086 Å · α 90° · β 90° · γ 90°
Transition10 K (−263 °C)
Measured at3 K
Magnetic ionsHo
Largest moment component1 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 4′/m b m′ →
Atom sites · 4 sites · CSV
siteelementxyzmambmc|m| (μB)
Ho1Ho0.3180.81800011
Tm1Tm000.2062
Tm2Tm0.08590.58590.5
Tm3Tm0.17730.03910.5

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

Shinji MICHIMURA et al. Journal of the Physical Society of Japan (2009) · doi:10.1143/JPSJ.78.024707

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.1127_TmB4.mcif from MAGNDATA · entry page

sha256 of this copy: 186db9a15b3be87b40145b29fa424e94f350b650967eb66592da28e25de71d74
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.1127_TmB4.mcif.