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Accounting for the Surface Energy in Spin Heisenberg’s Hamiltonians
- Authors: Fadel HQ1, Nukhov AK2, Musaev GM2, Kazbekov KK2
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Affiliations:
- University of Basra
- Dagestan State University
- Issue: No 3 (2013)
- Pages: 118-128
- Section: Articles
- URL: https://journals.rudn.ru/miph/article/view/8421
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Abstract
Using the quantum mechanical Bogolubov’s Hamiltonian hierarchy for localized electronicexcitations of the crystal system, we have obtained the Hamiltonian of the spin excitations ofthe Heisenberg model, taking into account the surface energy. This Hamiltonian is obtained in the zero approximation in the spin-spin interaction for a ferromagnetic crystal, in case ofrigid fixing of ions in the lattice sites. The corresponding expressions for the displacement ofions in the crystal lattice are also shown.
About the authors
H Q Fadel
University of Basra
Email: hdr_edany@yahoo.com
Physics department College of education
A K Nukhov
Dagestan State University
Email: nukhov1984@mail.ru
Department of Physics
G M Musaev
Dagestan State University
Email: mgm20001942@mail.ru
Department of Physics
K K Kazbekov
Dagestan State University
Email: kairbek75@mail.ru
Department of Physics
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