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Diamagnetic Properties of the Electron-exciton Bound States in Charge-transfer Organic Solids by C. Mavroyannis is a Physics and Astronomy article available to read on EtoBox.

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An effective Hamiltonian is established which describes the excitation spectrum of independent quasiparticles arising from the coherent electron-exciton pairing in molecular solids of the charge-transfer type. This Hamiltonian is then used to study the interaction Of the quasiparticles with an external transverse electromagnetic field. An expression for the dielectric function is derived which describes the dielectric properties of the system. In the presence of electron-exciton pairing and in the long-wavelength limit, the diamagnetic current is finite and is of the London type, indicating the existence of the Wleissner effect. The corrections to the London value for the diamagnetic current depend on the magnitudes of the binding energy of the exciton, the gap function, and the energy difference between the excited and ground states of the system. In the absence of electron-exciton pairing, the diamagnetic current vanishes and the dielectric function corresponds to that for the exciton band.

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Author

C. Mavroyannis

Publisher

Springer US; Springer-Verlag; Kluwer Academic/Plenum Publishers; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0022-2291)

Published

1975

Language

EN

Field

Physics and Astronomy (Physical Sciences)