Comment on Finite 2D Quantum Heisenberg Ferromagnet : Progress Letters
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Spin wave calculations of energy and susceptibility of S=1/2 Heisenberg ferromagnet (H=-J？_<(ij)>S_iビ_j) on the finite square lattice are done and compared with exact diagonalization for 4×4 lattice and recent Kadowaki and Ueda's Monte Carlo calculations up to 30×30 lattices. The agreement is good at low temperatures (T≤0.2J).
- 理論物理学刊行会の論文
- 1990-05-25
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