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The archetypal molecular bridge – a single level molecular island connected by tunneling junctions to two massive leads – acquires new properties, if the leads are ferromagnetic metals. We have studied transient effects induced by suddenly connecting the leads in the parallel geometry. The tunneling is spin dependent and a local magnetization is formed on the level originally empty. The process depends on the strength

*U*of the local electron-electron interaction and on the structure of the tunneling functions. A model prediction of the time evolution of the transient local magnetization is shown in the figure for reasonable values of*U*. The incipient coherent oscillations, almost independent on*U*, are damped. The saturation magnetization is first zero, for*U*increasing from zero, then negative, i.e. opposite with respect to the magnetization of the leads. At a critical value of*U*, the saturation magnetization reverts and further depends but weakly on increasing*U*.Text

The archetypal molecular bridge – a single level molecular island connected by tunneling junctions to two massive leads – acquires new properties, if the leads are ferromagnetic metals. We have studied transient effects induced by suddenly connecting the leads in the parallel geometry. The tunneling is spin dependent and a local magnetization is formed on the level originally empty. The process depends on the strength

A.Kalvova,V.Spicka, B. Velicky J. Supercond. and Novel Magnetism 28 (2015) p. 1087-1091

*U*of the local electron-electron interaction and on the structure of the tunneling functions. A model prediction of the time evolution of the transient local magnetization is shown in the figure for reasonable values of*U*. The incipient coherent oscillations, almost independent on*U*, are damped. The saturation magnetization is first zero, for*U*increasing from zero, then negative, i.e. opposite with respect to the magnetization of the leads. At a critical value of*U*, the saturation magnetization reverts and further depends but weakly on increasing*U*.