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发表于 2025-3-28 15:04:05
Neutron Scattering Experiments on Two-Dimensional Heisenberg and Ising Magnets,ture and also the symmetry of the lattice on which the spins are located. No real substance, however, is an ideal system for which the Hamiltonian can be written in terms of a single, simple interaction term. In most cases some additional interaction terms of different symmetry are needed. As will b
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发表于 2025-3-28 20:59:42
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