Table 1.

Overview of materials with a unit cell structured as a SL. The table presents whether the material is successfully synthesised experimentally, the lattice constants found in the literature for these materials (either experimental or theoretical values), the intercalated layer with the corresponding lattice constant and the lattice mismatch between the SL and the intercalated layer. The intercalated layer is presented as XTe or XTe₂, depending on the experimental stability of the phases.

Material	Experimentally Observed?	a${}_{\mathbf{SL}}$ [Å]	Intercalated Layer	a${}_{\mathbf{int}.}$ [Å]	Lattice Structure	${\Delta }_{\mathit{a}}$ [Å]
VBi2Te4	No	4.34–4.37 [9,26,33,34,35]	VTe2	3.59	Hexagonal, P$\overline{3}m$1	0.75–0.78
MnBi2Te4	Yes [8,21,22,23,27,36]	4.33 [36]	MnTe	4.13 [37]	Hexagonal, P63/mmc	0.20
FeBi2Te4	Yes [38]	4.39 [9,38]	FeTe	3.83 [38,39]	Tetragonal, P4/nmm	0.56
			FeTe2	3.77 [40]	Hexagonal, P$\overline{3}m$1	0.63
EuBi2Te4	No	4.50 [9,33]	EuTe	6.60 [41,42]	Cubic, Fm$\overline{3}m$	2.10
			EuTe2	6.97 [43]	Tetragonal, I4/mcm	2.47
NiBi2Te4	Yes *	4.30 [9,33]	NiTe2	3.86 [44]	Hexagonal, P$\overline{3}m$1	0.44
CrBi2Te4	No	4.32 [45]	CrTe2	3.79 [46]	Hexagonal, P$\overline{3}m$1	0.53
TiBi2Te4	No	4.39 [9]	TiTe2	3.78 [47]	Hexagonal, P$\overline{3}m$1	0.61
PbBi2Te4	Yes [48,49]	4.44 [49]	PbTe	6.46 [50]	Cubic, Fm$\overline{3}m$	2.02
SnBi2Te4	Yes [51,52,53]	4.40 [51,53]	SnTe	6.32 [50]	Cubic, Fm$\overline{3}m$	1.92
GeBi2Te4	Yes [54,55]	4.33 [54,55]	GeTe	4.16 [50,56]	Rhombohedral, R$\overline{3}m$	0.17

* Not observed as multilayered/bulk material. Ref. [57] observed the SL structure as an intercalated layer between Bi₂Te₃ and Ni-doped Bi₂Te₃.