Skip to content

AV3Sb5 family

\(AV_3Sb_5\) Family

The family of \(AV_3Sb_5\)(A=K, Rb, Cs) is a newly discovered series of kagome-based compounds realizing unconventional many-body phases and nontrivial electronic topology.

Structure 1

KVS.png

  • All materials exhibit a structurally perfect two-dimensional kagome net of vanadium. There are two distinct Sb sublattices.
  • The \(AV_3Sb_5\) family crystallizes in the hexagonal P6/ mmm space group. The V-atoms create the kagome network, while the Sb1 atoms fill the centers with the kagome triangles. These V-Sb1 layers are sandwiched between graphite-like Sb2 layers that are, in turn, separated by the alkali-metal ions, creating easily exfoliable quasi-2D structures.
  • This family of compounds possess both Time reversal symmetry and Inversion symmetry.

Structural Instabilities.

  1. New kagome prototype materials: discovery of \(KV_3Sb_5\), \(RbV_3Sb_5\) and \(CsV_3Sb_5\)(Link) ↩