Research/Sitter/MAGNDATA / 0.1_LaMnO3.mcif

LaMnO₃

MAGNDATA entry 0.1 · 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 ²m²m¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 139.5 K (−134 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P n′ m a′ BNS 62.448
Point group	m′m′m
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 5.7461 · b 7.6637 · c 5.5333 Å · α 90° · β 90° · γ 90°
Transition	139.5 K (−134 °C)
Measured at	1.4 K
Magnetic ions	Mn
Largest moment component	3.87 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)
La	La	0.0513	0.25	−0.0095
Mn	Mn	0	0	0.5	3.87	0	0	3.87
O1	O	0.4849	0.25	0.0777
O2	O	0.3085	0.0408	0.7227

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

Moussa, F. et al. PHYSICAL REVIEW B (1995)

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.1_LaMnO3.mcif from MAGNDATA · entry page

sha256 of this copy: cfafaac692ab397d90f13ee4a30c8d9d7391353151bdba84e43f0e6ff7ef3d59
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.1_LaMnO3.mcif.