论文信息 - Interface free energy and transition temperature of the square-lattice Ising antiferromagnet at finite magnetic field

Interface free energy and transition temperature of the square-lattice Ising antiferromagnet at finite magnetic field

We use a simple method to calculate interface properties of the square-lattice Ising antiferromagnet with nearest neighbour interaction. The method bypasses the more complicated bulk problem by taking into account only interface configurations of spins and allows the inclusion of a finite magnetic field. From this we derive two new results: 1) the interface free energy associated with the coexistence of the two antiferromagnetic phases at finite magnetic field, and 2) the transition temperature as a function of the magnetic field which determines the phase boundary.

J. Zittartz | J. Zittartz | E. Müller-Hartmann | E. Müller-Hartmann | Erwin Müller-Hartmann

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