Research/Sitter/MAGNDATA / 0.712_VNb3S6.mcif

VNb₃S₆

MAGNDATA entry 0.712 · 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 ≤ 50 K (−223 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	C 2′ 2′ 2₁ BNS 20.33
Parent space group	P 6₃ 2 2 No. 182
Spins	collinear · 4 nodal planes · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 5.7387 · b 5.7387 · c 12.1126 Å · α 90° · β 90° · γ 120°
Transition	50 K (−223 °C)
Measured at	4.5 K
Magnetic ions	V
Largest moment component	1.5 μ_B
Method	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 C 2′ 2′ 2₁ →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Nb1	Nb	0	0	0
Nb2	Nb	0.3333	0.6667	0.996
V1	V	0.3333	0.6667	0.25	1.5	0	0	1.5
S1_1	S	0.6633	0.0011	0.1298
S1_2	S	0.9989	0.6622	0.1298
S1_3	S	0.3378	0.3367	0.1298

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

K. Lu et al. PHYSICAL REVIEW MATERIALS (2020) · doi:10.1103/PhysRevMaterials.4.054416

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.712_VNb3S6.mcif from MAGNDATA · entry page

sha256 of this copy: a59575584d2ff8a95f094a07351473b0ec2ef5129371366100578772f229e6bc
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.712_VNb3S6.mcif.