Synthesis and Growth of Single Crystals of a New Topologically Nontrivial Compound CaSn2As2

Key Points

• The aim is to synthesize and analyze the topologically nontrivial compound CaSn2As2.
• Synthesis of single crystals using the self-flux method in SnAs.
• Element distribution maps are obtained from the crystal surface.
• Calculation of the molar ratio of elements present in the compound.
• Determination of the structural configuration in trigonal syngony.
• The compound is confirmed to have a trigonal structure.
• Space group identified as $$R\bar {3}m$$.
• Cell parameters measured as a = 4.1503 Å and c = 26.049 Å.