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Finite temperature properties of symmetric $\pm J$ multileg Ising ladders andtubes are investigated using the statistical transfer matrix method. Thetemperature dependences of the specific heat and entropy are calculated. In thecase of tubes, it is found that the ground state entropy shows an even-oddoscillation with respect to the number of legs. The same type of oscillation isalso found in the ground state energy. On the contrary, these oscillations donot take place in ladders. From the temperature-dependence of the specificheat, it is found that the lowest excitation energy is 4J for even-leg ladderswhile it is 2J otherwise, The physical origin of these behaviors is discussedbased on the structure of excitations.

Statistical Transfer Matrix Study of the $\pm J$ Multileg Ising Ladders and Tubes