Research/Sitter/MAGNDATA / 0.681_Ce4Sb3.mcif

Ce₄Sb₃

MAGNDATA entry 0.681 · 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.

Structure · 9 properties

Magnetic group	I 4′ 2 d′ BNS 122.336
Parent space group	I 4 3 d No. 220
Spins	collinear · 2 nodal planes · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 9.56 · b 9.56 · c 9.56 Å · α 90° · β 90° · γ 90°
Measured at	2 K
Magnetic ions	Ce
Largest moment component	1.24 μ_B
Method	NPD

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 I 4′ 2 d′ →

Atom sites · 3 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Sb1_1	Sb	0.375	0	0.25
Sb1_2	Sb	0	0.25	0.375
Ce1	Ce	0.571	0.571	0.571	0	0	1.24	1.24

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

R. Nirmala et al. Journal of Magnetism and Magnetic Materials (2009) · doi:10.1016/j.jmmm.2008.08.102

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.681_Ce4Sb3.mcif from MAGNDATA · entry page

sha256 of this copy: 6947982b45c398a3d5738474c5a5ad249fb90809af4e9f89224b9b7f9941ca47
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.681_Ce4Sb3.mcif.