Research/Sitter/MAGNDATA / 0.417_LaCrO3.mcif

LaCrO₃

MAGNDATA entry 0.417 · 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 ²m¹m²m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 310 K (37 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P n′ m a′ BNS 62.448
Parent space group	P n m a No. 62
Spins	collinear · 2 nodal planes · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 5.4962 · b 5.4962 · c 7.7202 Å · α 90° · β 90° · γ 90°
Transition	310 K (37 °C)
Measured at	295 K
Magnetic ions	Cr
Largest moment component	0.98 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 P n′ m a′ →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
La1	La	0.9916	0.0194	0.25
Cr1	Cr	0.5	0	0	0.98	0	0	0.98
O1	O	0.066	0.4953	0.25
O2	O	0.2306	0.2258	0.5347

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

J.-S. Zhou et al. PHYSICAL REVIEW LETTERS (2011) · doi:10.1103/PhysRevLett.106.057201

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.417_LaCrO3.mcif from MAGNDATA · entry page

sha256 of this copy: 57767640bc9e6341f3e41bd9ccf63ef39c1b087c6f495eaef6c17503bd6ae3f8
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.417_LaCrO3.mcif.