Variational Multistate-Ket Derivation of the Heisenberg Spin Hamiltonian
- 1 November 1973
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 8 (5) , 2280-2287
- https://doi.org/10.1103/physreva.8.2280
Abstract
A new variational derivation scheme for the Heisenberg exchange Hamiltonian is presented. A many-body variational Ansatz for the multistate ket appearing in the derivation is described and is applied to a simple model problem containing the qualitatively important different types of exchange contributions. Advantages of the present derivation over others are briefly indicated.Keywords
This publication has 32 references indexed in Scilit:
- Cluster Expansion in the Heitler-London Approach to Many-Electron ProblemsPhysical Review B, 1964
- Critique of the Heitler-London Method of Calculating Spin Couplings at Large DistancesReviews of Modern Physics, 1962
- Antiferromagnetic Coupling and Covalent Bonding in Almost Totally Ionic SaltsThe Journal of Chemical Physics, 1960
- Theory of SuperexchangePhysical Review B, 1959
- New Approach to the Theory of Superexchange InteractionsPhysical Review B, 1959
- Superexchange InteractionPhysical Review B, 1958
- Extension of the Dirac Vector Model to Include Several ConfigurationsPhysical Review B, 1934
- The Dirac Vector Model in Complex SpectraPhysical Review B, 1934
- Quantum mechanics of many-electron systemsProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1929
- Zur Theorie des FerromagnetismusThe European Physical Journal A, 1928