Ising Chain with Long- and Short-Range Interactions
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概要
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The Ising linear chain with nearest-neighbor intccractions of strength J, andinfinite long-range ferronaagnetic exponential inter'actions of streuagth J Z wassolved exactly in tlae presence of the external field. Th<: spontaneous vtaagnetizationand the susceptibility are obtained. The transition te?nperature depends on J,and J,. For ./.>0, the umodel shows the second order phase transion. The specificheat shows both a. broad peak and a slaarp peak. The value of sharp peak of thespecific heat depertds on J, and J l . For J,< O, the proj>erties of the transition agreewith those of Nagle naodel with long-range equivalent-neighbor ferrona.agrneticinteractions. The exact free energy and the long-range order of our xvaodel areidentical with those of the variatiouaal theory of a qaaasj-ouae-diznensional model.
- 社団法人日本物理学会の論文
- 1980-11-15
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