86 citations · 447 across the 18 of their papers we have counts for
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Phase Transitions in Bilayer Heisenberg Model with General Couplings
Yasuhiro Matsushita, Martin P. Gelfand, Chikara Ishii
The ground state properties and phase diagram of the bilayer square-lattice Heisenberg model are studied in a broad parameter space of intralayer exchange couplings, assuming an an…
Spin-S bilayer Heisenberg models: Mean-field arguments and numerical calculations
Martin P. Gelfand, Zheng Weihong, C. J. Hamer +1
Spin-S bilayer Heisenberg models (nearest-neighbor square lattice antiferromagnets in each layer, with antiferromagnetic interlayer couplings) are treated using dimer mean-field th…
Tests of magnetic Hamiltonians for CaV_4O_9
Martin P. Gelfand, Rajiv R. P. Singh
We study the uniform magnetic susceptibility and spin-gap for recently proposed Heisenberg model Hamiltonians for CaV_4O_9 based on the orbital ordering scenario of Marini and Khom…