The phase diagrams of a spin-1 transverse Ising model |
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| Authors: | Hailing Miao Jing Liu |
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| Institution: | a College of Sciences, Northeastern University, Shenyang 110004, China
b International Center for Material Physics, Academia Sinica, Shenyang 110015, China |
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| Abstract: | The phase diagrams of the spin-1 transverse Ising model with the presence of a crystal field is investigated by using an effective-field theory (EFT). We give a method to calculate the Gibbs free energy numerically at finite temperature within the EFT. The first-order transition lines are obtained by comparing the Gibbs free energy. The phase diagrams and the Gibbs free energy are also compared with those given using the mean-field theory (MFT). |
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| Keywords: | 75 10 Dg 75 30 Kz 75 40 &minus s 75 10 Jm |
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