On the theory of singlet and triplet charge-transfer excitons

作者: B. J. Schmid , P. P. Reineker

DOI: 10.1002/PSSB.2221170112

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摘要: A many-particle Hamiltonian for electrons which takes into account their energy in a periodic potential and an external magnetic field, as well Coulomb spin—spin interaction energies is specialized charge-transfer excitons on linear chain with one donor acceptor molecule the unit cell. The decomposes part singlet excitons, diagonalized exactly, triplet whose diagonalization reduced to wave vector dependent eigenvalue problems of dimension fine-structure tensor expressed explicitly terms electronic matrix elements. Ein Vielteilchen-Hamiltonoperator fur Elektronen, der ihre Energie einem periodischen Potential und auseren Magnetfeld Coulomb- Spin—Spin-Wechselwirkungsenergien berucksichtigt, wird Charge-Transfer-Exzitonen einer linearen Kette mit je Donator-und Akzeptormolekul Einheitszelle spezialisiert. Der Hamiltonoperator zerfallt einen Teil Singulettexzitonen, exakt diagonalisiert wird, Triplettexzitonen, dessen Diagonalisierung auf wellenvektorabhangige Eigenwertprobleme von Dimension reduziert wird. Feinstrukturtensor explizit durch elektronische Matrixelemente dargestellt.

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