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(a) The molecular structure of 3-hexadecyl pyrrole. (b) The high magnification SEM image of one-layer molecular LB film on film. It shows uniform surface on nanometer scale with cluster structure at the air-molecular interface.
The magnetoresistance of organic tunnel junction with different spacer thicknesses and junction sizes. (a) one-layer spacer with junction size of , (b) two-layer spacer with junction size of by metal mask, and (c) three-layer spacer with junction size of .
The hysteresis loop of multilayer films with different LB-film spacer thicknesses by layers at room temperature [(●) for one layer, (◇) for two layers, and (엯) for three layers].
The curves of junctions with special size of but different spacer thicknesses of one-layer and three-layer LB-film (inset). They are slightly different in resistance and it is linear for one-layer spacer junction, tunneling for three-layer spacer junction.
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