Mechanisms for Spin-Supersolidity in S=1/2 Spin-Dimer Antiferromagnets

J. -D. Picon, A. F. Albuquerque, K. P. Schmidt +3

Using perturbative expansions and the contractor renormalization (CORE) algorithm, we obtain effective hard-core bosonic Hamiltonians describing the low-energy physics of $S=1/2$ s…