Exchange Perturbation Theory for Multiatomic Electron System and Its Application to Spin Arrangement in Manganite Chains
Joint Authors
Orlova, T. S.
Orlenko, E. V.
Orlenko, F. E.
Zegrya, G. G.
Source
Advances in Physical Chemistry
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-05-16
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
A new methodology of binding energy calculation with respect to different spin arrangements for a multiatomic electron system is developed from the first principle in the frame of the exchange perturbation theory (EPT).
We developed EPT formalism in the general form of the Rayleigh-Srchödinger expansion with a symmetric Hamiltonian, taking into account an exchange and nonadditive contributions of a superexchange interaction.
The expressions of all corrections to the energy and wave function were reduced to the nonsymmetric Hamiltonian form.
The EPT method is extended for the case of degeneracy in the total spin of a system.
As an example of the application of the developed EPT formalism for the degeneracy case, spin arrangements were considered for the key 〈Mn〉–O–〈Mn〉 (〈Mn〉: Mn3+ or Mn4+) fragments in manganites.
In 〈Mn〉–O–〈Mn〉 for La1/3Ca2/3MnO3 are in good agreement the obtained estimations of Heisenberg parameter and binding energy with the available experimental data.
American Psychological Association (APA)
Orlenko, E. V.& Orlova, T. S.& Orlenko, F. E.& Zegrya, G. G.. 2011. Exchange Perturbation Theory for Multiatomic Electron System and Its Application to Spin Arrangement in Manganite Chains. Advances in Physical Chemistry،Vol. 2011, no. 2011, pp.1-11.
https://search.emarefa.net/detail/BIM-504772
Modern Language Association (MLA)
Orlenko, E. V.…[et al.]. Exchange Perturbation Theory for Multiatomic Electron System and Its Application to Spin Arrangement in Manganite Chains. Advances in Physical Chemistry No. 2011 (2011), pp.1-11.
https://search.emarefa.net/detail/BIM-504772
American Medical Association (AMA)
Orlenko, E. V.& Orlova, T. S.& Orlenko, F. E.& Zegrya, G. G.. Exchange Perturbation Theory for Multiatomic Electron System and Its Application to Spin Arrangement in Manganite Chains. Advances in Physical Chemistry. 2011. Vol. 2011, no. 2011, pp.1-11.
https://search.emarefa.net/detail/BIM-504772
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-504772