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The magnetic correlation between organic radicals in a quasi-one-dimensional organic ferromagnet

Solid State Communications

The direct and indirect correlation between organic radicals in a quasi-one-dimensional organic ferromagnet model is investigated. By introducing random-phase-approximation (RPA), the typical spin-wave excitation modes of the model are obtained. The stiffness of acoustic spin-wave mode is found to r...

关键词: hubbard-model

A study on the ground state in interchain coupled quasi-one-dimensional organic ferromagnets

Journal of Physics-Condensed Matter

We deal with two neighbouring pi-conjugated organic ferromagnetic chains with a Hamiltonian including the Hubbard on-site electron-electron repulsion and nearest-neighbouring Coulomb repulsion. We take into account the interchain coupling as an interchain electron-transfer term, which is different w...

关键词: hubbard-model