Published

2003-07-01

Energía del estado base en un modelo de Heisenberg antiferromagnético.

Keywords:

Modelo de Heisenberg antiferromagnético (es)

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Authors

  • A. Altamar Asistente Editorial Momento Revista de Física
  • J. Rodríguez Departamento de Física, Universidad Nacional de Colombia, Bogotá.
En este trabajo se estudia un sistema de espín antiferromagnético sobre una red cuadrada no frustada sin considerar los efectos de la temperatura. El sistema se describe a través de un modelo de Heisenberg antiferromagnético. Se considera sólo las interracciones entre los espines a primeros vecinos, se aplica el método analítico de la teoría lineal de las ondas de espín para calcular la relación de dispersión y la energía por sitio en el estado base.

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