Papers
Published 14-05-2019
Keywords
- Popov - Fedotov trick,
- functional integral,
- Heisenberg model,
- non-Bravais lattice
How to Cite
Nga, P. T. T., & Thang, N. T. (2019). Magnetic Order in Heisenberg Models on Non-Bravais Lattice: Popov-Fedotov Functional Method. Communications in Physics, 29(2), 119. https://doi.org/10.15625/0868-3166/29/2/13508
Abstract
We study magnetic properties of ordered phase in Heisenberg model on a non-Bravais lattice by means of Popov - Fedotov trick, which takes into account a rigorous constraint of a single occupancy. We derive magnetization and free energy using sadle point approximation in the functional integral formalism. We illustrate the application of the Popov -- Fedotov approach to the Heisenberg antiferromagnet on a honeycomb lattice.Downloads
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