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Table 1 Lattice parameters and calculated formation energy of the SnxPy monolayers

From: SnxPy Monolayers: a New Type of Two-Dimensional Materials with High Stability, Carrier Mobility, and Magnetic Properties

SnxPy monolayers Lattice parameters Space group Formation energy (eV/atom)
a b c Alpha Beta Gamma
P\( \overline{6} \)m2-SnP 3.95 3.95 17.16 90 90 120 P\( \overline{6} \)m2 − 0.235
P\( \overline{3} \)m1-SnP 3.96 3.96 17.11 90 90 120 P\( \overline{3} \)m1 − 0.223
Pmc21-SnP2 3.71 10.78 15.83 90 90 90 Pmc21 − 0.159
P\( \overline{4}{2}_1 \)m-SnP2 7.59 7.59 14.66 90 90 126.69 P\( \overline{4}{2}_1 \)m − 0.016