Research/Sitter/MAGNDATA / 1.0.38_CsCoCl3.mcif

CsCoCl₃

MAGNDATA entry 1.0.38 · source

g-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. g-wave: 4 nodal planes.

Spin group ²6/²m²m¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 21.5 K (−252 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P 6₃′/m′ c m′ BNS 193.259
Parent space group	P 6₃/m m c No. 194
Spins	collinear · 4 nodal planes · net moment 0 μ_B per cell
Propagation	[1/3 1/3 0] · [0 0 0] 1k
Cell	a 12.4741 · b 12.4741 · c 6.0315 Å · α 90° · β 90° · γ 120°
Transition	21.5 K (−252 °C)
Measured at	4.2 K
Magnetic ions	Co
Largest moment component	2.3 μ_B
Method	NPD and NSD

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 6₃′/m′ c m′ →

Atom sites · 5 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Co1_1	Co	0	0	0	0	0	2.3	2.3
Co1_2	Co	0.3333	0.6667	0	0	0	−2.3	2.3
Cs1	Cs	0.6667	0	0.75
Cl1_1	Cl	0.8455	0	0.25
Cl1_2	Cl	0.1788	0.6667	0.25

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

Source

M. Melamud et al. phys. stat. sol. (b) (1974) · doi:10.1002/pssb.2220630234

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.0.38_CsCoCl3.mcif from MAGNDATA · entry page

sha256 of this copy: 4c8b44dd395b36d994edec534c6e355c280125f1b31cf575859ab2f5110420ab
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.0.38_CsCoCl3.mcif.