High-field magnetization of V15 cluster at ultra-low temperatures: Importance of antisymmetric exchange and its precise estimation

The low temperature adiabatic magnetization of the nanoscopic V15 cluster exhibiting a triangular spin-frustrated V3IV array is analyzed. The orientation of the antisymmetric (AS) exchange vector is shown to play crucial role in spin-frustrated systems. We were able for the first time to estimate precisely components of the AS vector.