PROGRAMA DE PÓS-GRADUAÇÃO EM FÍSICA (CCEN - PPGF)
CENTRO DE CIÊNCIAS EXATAS E DA NATUREZA (CCEN)
- Telefone/Ramal
- Não informado
Notícias
Colóquio: Topological solitons mediated spin-charge conversion effects in conducting polymers (Sergei Sergeenkov - UFPB)
| By mapping a Hubbard-like electronic Hamiltonian (describing a conducting polymer with antiferromagnetic properties in the presence of strong enough electron-phonon interactions) onto the canonical system of two coupled nonlinear Schroedinger equations with U(2) symmetry group, some very nontrivial correlations between topological solitons mediated charge and spin degrees of freedom are obtained, including fractionalization, reentrant like behavior and spin-charge conversion effects. |
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