Altermagnets Database

Identity

Elements

Eu, In, As

Space group i Parent crystallographic space-group.

${\mathrm{Cmcm}}$ (63), ${\mathrm{P}6_{3}/\mathrm{mmc}}$ (194), ${\mathrm{P}6_{1}22}$ (178)

MAGNDATA IDs i A screened entry may correspond to one or more entries in the MAGNDATA database.

• 1.0.31
• 1.0.32

ICSD IDs

260109

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

${\mathrm{Cmcm}}$ (63), ${\mathrm{P}6_{3}/\mathrm{mmc}}$ (194), ${\mathrm{P}6_{1}22}$ (178)

References

• 10.1038/s41467-021-21154-y

Properties

KS Gap i The band gap from Kohn-Sham DFT.

n/a eV

KS Gap Type

KS gap unavailable

Min abundance i Minimum crustal abundance among the constituent elements, reported in ppm as a simple scarcity proxy.

0.250 ppm

Spin-splitting metrics

$\Delta E^{\mathrm{max}}_{\mathrm{split}}$ i Largest spin splitting within ±3 eV of the Fermi level in the high-throughput calculation.

0.041 eV

$\Delta E^{\mathrm{avg}}_{\mathrm{split}}$ i Brillouin-zone average of the largest spin splitting at each k-point within the same energy window.

0.026 eV

FΔ i Fraction of the sampled Brillouin zone and near-Fermi bands with appreciable spin splitting.

2.1%

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	Collinearity i Whether the magnetic configuration was collinear in MAGNDATA or constructed from a noncollinear entry.	Phase i Some materials also have non-altermagnetic (AM) phases predicted; AM for altermagnet and FiM for ferrimagnet.	Wave i Symmetry wave-class shorthand derived from the parent and halving-subgroup Laue classes used in the altermagnetism analysis.	SYMPREC i Spglib symmetry tolerance symprec, shown as an exponential base-10 value.	BNS (MCIF) i BNS setting indicated in the source MCIF file.	G	H
1.0.31	Based on noncollinear	AM	d	$10^{-5}$	${\mathrm{C}2^{\prime}2^{\prime}2_{1}}$ (20.33)	mmm	2/m
1.0.31	Based on noncollinear	AM	g	$10^{-4}$	${\mathrm{C}2^{\prime}2^{\prime}2_{1}}$ (20.33)	6/mmm	-3m
1.0.31	Based on noncollinear	AM	g	$10^{-3}$	${\mathrm{C}2^{\prime}2^{\prime}2_{1}}$ (20.33)	6/mmm	-3m
1.0.32	Based on noncollinear	AM	d	$10^{-5}$	${\mathrm{P}6_{1}2^{\prime}2^{\prime}}$ (178.159)	mmm	2/m
1.0.32	Based on noncollinear	AM	g	$10^{-4}$	${\mathrm{P}6_{1}2^{\prime}2^{\prime}}$ (178.159)	6/mmm	-3m

MAGNDATA 1.0.31

$\mathrm{EuIn_{2}As_{2}}$

Open entry

Collinearity Based on noncollinear

Phase AM

Wave d

BNS (MCIF) i BNS setting indicated in the source MCIF file.

${\mathrm{C}2^{\prime}2^{\prime}2_{1}}$ (20.33)

BNS

${\mathrm{Cmc}^{\prime}2_{1}^{\prime}}$ (36.175)

Parent SG

${\mathrm{Cmcm}}$ (63)

SYMPREC i Spglib symmetry tolerance symprec, shown as an exponential base-10 value.

$10^{-5}$

Connecting element

$C_{2z}$

G Laue class

mmm

H Laue class

2/m

Spin-angle mismatch

79.5°

Reference links

• 10.1038/s41467-021-21154-y

MAGNDATA 1.0.31

$\mathrm{EuIn_{2}As_{2}}$

Open entry

Collinearity Based on noncollinear

Phase AM

Wave g

BNS (MCIF) i BNS setting indicated in the source MCIF file.

${\mathrm{C}2^{\prime}2^{\prime}2_{1}}$ (20.33)

BNS

${\mathrm{P}6_{3}^{\prime}\mathrm{mc}^{\prime}}$ (186.206)

Parent SG

${\mathrm{P}6_{3}/\mathrm{mmc}}$ (194)

SYMPREC i Spglib symmetry tolerance symprec, shown as an exponential base-10 value.

$10^{-4}$

Connecting element

$C_{2z}$

G Laue class

6/mmm

H Laue class

-3m

Spin-angle mismatch

79.5°

Reference links

• 10.1038/s41467-021-21154-y

MAGNDATA 1.0.31

$\mathrm{EuIn_{2}As_{2}}$

Open entry

Collinearity Based on noncollinear

Phase AM

Wave g

BNS (MCIF) i BNS setting indicated in the source MCIF file.

${\mathrm{C}2^{\prime}2^{\prime}2_{1}}$ (20.33)

BNS

${\mathrm{P}6_{3}^{\prime}/\mathrm{m}^{\prime}\mathrm{mc}^{\prime}}$ (194.269)

Parent SG

${\mathrm{P}6_{3}/\mathrm{mmc}}$ (194)

SYMPREC i Spglib symmetry tolerance symprec, shown as an exponential base-10 value.

$10^{-3}$

Connecting element

$C_{2z}$

G Laue class

6/mmm

H Laue class

-3m

Spin-angle mismatch

79.5°

Reference links

• 10.1038/s41467-021-21154-y

MAGNDATA 1.0.32

$\mathrm{EuIn_{2}As_{2}}$

Open entry

Collinearity Based on noncollinear

Phase AM

Wave d

BNS (MCIF) i BNS setting indicated in the source MCIF file.

${\mathrm{P}6_{1}2^{\prime}2^{\prime}}$ (178.159)

BNS

${\mathrm{C}22^{\prime}2_{1}^{\prime}}$ (20.34)

Parent SG

${\mathrm{P}6_{1}22}$ (178)

SYMPREC i Spglib symmetry tolerance symprec, shown as an exponential base-10 value.

$10^{-5}$

Connecting element

$C_{21}$

G Laue class

mmm

H Laue class

2/m

Spin-angle mismatch

60.0°

Reference links

• 10.1038/s41467-021-21154-y

MAGNDATA 1.0.32

$\mathrm{EuIn_{2}As_{2}}$

Open entry

Collinearity Based on noncollinear

Phase AM

Wave g

BNS (MCIF) i BNS setting indicated in the source MCIF file.

${\mathrm{P}6_{1}2^{\prime}2^{\prime}}$ (178.159)

BNS

${\mathrm{P}6_{3}^{\prime}/\mathrm{m}^{\prime}\mathrm{mc}^{\prime}}$ (194.269)

Parent SG

${\mathrm{P}6_{3}/\mathrm{mmc}}$ (194)

SYMPREC i Spglib symmetry tolerance symprec, shown as an exponential base-10 value.

$10^{-4}$

Connecting element

$C_{2z}$

G Laue class

6/mmm

H Laue class

-3m

Spin-angle mismatch

60.0°

Reference links

• 10.1038/s41467-021-21154-y

Notes and warnings

• Issues encountered while parsing CIF: 13 fractional coordinates rounded to ideal values to avoid issues with finite precision. Skipping relative stoichiometry check because CIF does not contain formula keys.; Mismatch g vs. d in wave classification
• Mismatch g vs. d in wave classification