HEISENBERG HAMILTONIAN FOR CHARGE-TRANSFER ORGANOMETALLIC FERROMAGNETSстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:A highly anisotropic Heisenberg spin one-half Hamiltonian is derived for the organometallic charge-transfer ferromagnet DMeFc-TCNE and its effective exchange parameters are estimated. Its relationship to the generally adopted McConnell picture of ferromagnetic interaction in such systems is established and particular charge-transfer states responsible for the ferromagnetic sign of the effective spin-spin interaction are discussed. The model proposed is valid for a number of charge-transfer magnets. Possible effects of high anisotropy on critical temperature in the DMeFc-TCNE ferromagnet are discussed briefly.