On the Theory of Superexchange Interaction

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概要

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• The superexchange interaction for the spin coupling in certain magnetic compounds is treated on the basis of an approach which takes into account the deformation of the electron orbitals of the intervening ions. Quantitative calculations are carried out for three centre and four electron system. The polarization of the intervening ion is considered by assuming slightly different orbitals for the two electrons with anti-parallel spins. This corresponds to the procedure of taking certain excited configurations into considerations. The effect of the excited states in which one of the anion electrons changes its spin is also considered by using the perturbation method. If one regards the triplet and singlet states of the system as the representatives of the ferromagnetic and antiferromagnetic states respectively, their energy difference arises as a result of the latter effect, while the same occurs by merely considering the former deformation if one uses the single determinant approximation. A rough numerical estimate gives reasonable agreement with the observed Neel temperature for MnO.

• 理論物理学刊行会の論文
• 1959-11-25

著者

• Koide Shoichiro

  H. H. Wills Physics Laboratory University Of Bristol : Institute Of Physics College Of General Educa

• SINHA K.

  H. H. Wills Physics Laboratory, University of Bristol

• TANABE Yukito

  H. H. Wills Physics Laboratory, University of Bristol

• Sinha K.

  H. H. Wills Physics Laboratory University Of Bristol : National Chemical Laboratory

• Tanabe Yukito

  H. H. Wills Physics Laboratory University Of Bristol : Department Of Applied Physics Faculty Of Engi

• KOIDE Shoichiro

  H. H. Wills Physics Laboratory, University of Bristol : Institute of Physics, College of General Education, University of Tokyo

• TANABE Yukito

  H. H. Wills Physics Laboratory, University of Bristol : Department of Applied Physics, Faculty of Engineering, University of Tokyo

• SINHA K.

  H. H. Wills Physics Laboratory, University of Bristol : National Chemical Laboratory

関連論文

• On the Theory of Superexchange Interaction

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