Resonance behavior of a K S K S system near the mass 1775 MeV

Enhancement of the magnetoresistance and negative differential conductance of nanostructure arrays

“…For a single island, a finite polarization of the electrodes can induce regions of negative differential conductance, as well as oscillations and changes of sign in the TMR, dependending on the specific set-up [10][11][12][13][14][15]. Charging effects are known to be enhanced in nanostructure arrays [8,[16][17][18], however little is known about the spin transport in these systems. As the spin accumulation is the only way to transfer the spin information, a reduction of the TMR with increasing number of islands, similar to that in Eq.…”

“…To calculate the current we use a Monte Carlo simulation which depends on the tunneling rates, as described in previous works [16,18]. At each iteration a single tunneling event takes place.…”