Altermagnets Database

Identity

Elements

U, Cr, Si, C

Space group

${\mathrm{P}4/\mathrm{mmm}}$ (123)

MAGNDATA IDs

• 0.499

ICSD IDs

432804

Parent space group(s) i Parent nonmagnetic space group(s) reported by the MAGNDATA-based symmetry analysis after Spglib standardisation.

${\mathrm{P}4/\mathrm{mmm}}$ (123)

References

• 10.1021/acs.inorgchem.7b02901

Properties

Band gap

0.000 eV

Electronic type

Metallic

Min abundance

2.7 ppm

Spin-splitting metrics

Max SS i Largest spin splitting identified within ±3 eV of the Fermi level in the high-throughput DFT workflow.

0.719 eV

Avg SS i Brillouin-zone average of the largest spin splitting at each sampled k-point in the same energy window.

0.312 eV

FΔ i Fraction of near-Fermi bands and sampled k-space showing appreciable spin splitting after the numerical noise cutoff.

46.9%

Symmetry screening

The summary table shows one row per linked MAGNDATA record and symmetry-precision variant. If a MAGNDATA ID has multiple Spglib symprec values in the source data, it appears on multiple rows. The cards below keep the same expanded per-variant detail view, including wave classification and mismatch metrics.

MAGNDATA ID	Origin	Phase	Wave	BNS (mcif)	G	H
0.499	Naturally collinear	AM	d/g	${\mathrm{Pm}^{\prime}\mathrm{m}^{\prime}\mathrm{m}}$ (47.252)	4/mmm	mmm

MAGNDATA 0.499

$\mathrm{UCr_{2}Si_{2}C}$

Open entry

Origin Naturally collinear

Phase AM

Wave d/g d

BNS (mcif)

${\mathrm{Pm}^{\prime}\mathrm{m}^{\prime}\mathrm{m}}$ (47.252)

BNS

${\mathrm{P}4^{\prime}/\mathrm{mmm}^{\prime}}$ (123.343)

Effective BNS

${\mathrm{P}4^{\prime}/\mathrm{mmm}^{\prime}}$ (123.343)

Parent SG

${\mathrm{P}4/\mathrm{mmm}}$ (123)

SP

0.00001

Connecting element

$C_{4z}$

G Laue class

4/mmm

H Laue class

mmm

Spin-angle mismatch

0.0°

Spin-length mismatch

1.000

Reference links

• 10.1021/acs.inorgchem.7b02901

Notes and warnings

• Spglib mcif symmetry mismatch