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Fig. 3. First partition function zero a1(L), closest to the positive real axis, in the complex a=e2βJ1/5 plane of the Ising antiferromagnet (J1<0) on L×2L square lattices for L = 3–10 with a ratio of 5:2 between the nearest-neighbor and next-nearest-neighbor interactions.
New Phys.: Sae Mulli 2023;73:150~155