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cond-mat.stat-mech2011★ 55 cited
Analysis of the phase transition for the Ising model on the frustrated square lattice
A. Kalz, A. Honecker, M. Moliner
We analyze the phase transition of the frustrated - Ising model with antiferromagnetic nearest- and strong next-nearest neighbor interactions on the square lattice. Using…
cond-mat.str-el2011★ 12 cited
Quantum disordered ground state for hard-core bosons on the frustrated square lattice
A. Kalz, A. Honecker, S. Fuchs +1
We investigate the phase diagram of hard-core bosons on a square lattice with competing interactions. The hard-core bosons can be represented also by spin-1/2 operators and the mod…