Spin waves in one dimensional magnetic material

• Autorzy: Wijesinhe H. S , Wijewardena Gamalath K. A. I. L.

Identyfikatory

DOI

10.18052/www.scipress.com/ILCPA.47.24

• Języki publikacji: EN

Abstrakty

EN

Using Heisenberg model, the equations of motion for the dynamic properties of spin waves in three dimensions were obtained and solved analytically up to an exponential operator representation. Second order Suzuki Trotter decomposition method with evolution operator solution was applied to obtain the numerical solutions by making it closer to real spin systems. Computer based simulations on systems in micro canonical ensembles in constant-energy states were used to check the applicability of this model for one dimensional lattice by investigating the occurrence, temperature dependence and spin-spin interaction dependence of the spin waves. A visualization technique was used to show the existence of many spin wave components below the Curie temperature of the system. In the magnon dispersion curves all or most of the spin wave components could be recognized as peaks in the dynamic structure factor. Energy conservation of the algorithm is also shown.

Słowa kluczowe

EN

Heisenberg model; spin waves; Suzuki Trotter decomposition method; magnon dispersion; curve; magnetic material

• Wydawca: Przedsiębiorstwo Wydawnictw Naukowych "DARWIN"
• Czasopismo: International Letters of Chemistry, Physics and Astronomy
• Rocznik: 2015
• Tom: Vol. 47
• Strony: 24--39
• Opis fizyczny: Bibliogr. 10 poz., tab., wykr., wz.

Twórcy

autor

Wijesinhe H. S

• Department of Physics, University of Colombo, Colombo - 3, Sri Lanka

autor

Wijewardena Gamalath K. A. I. L.

• Department of Physics, University of Colombo, Colombo - 3, Sri Lanka

Bibliografia

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