The Mixed Spin S=(1/2,1) XXZ Ferrimagnet at Zero Temperature

摘要

Linked cluster series expansions about the Ising limit are used to studyground state preperties, viz. ground state energy, magnetization and excitationspectra, for mixed spin S=(1/2,1) quantum ferrimagnets on simple bipartitelattices in 1, 2, and 3-dimensions. Results are compared to second-order spinwave theory and, in general, excellent agreement is obtained.