Abstract
The magnetic properties of a film are the main causes of large spin selectivity in electron transmission and are consistent with the effect of inorganic-like thin magnetic layers with a large magnetoresistance effect. In the present study, the authors have proposed an explanation for the magnetic behavior of membranes using a physical model. The IR spectra of DC and LC layers showed amide I and II bands. The amide I vibration was parallel to the molecular axis at ca. 1665 cm-1 and the amide II vibration, at around 1550 cm-1, was perpendicular to the axis. The magnetic field affects the relative IR intensities. For the LC layers the S fields increase the average tilt angles while N fields decrease them. However, for the DC layers the reverse is true. Hence for DC layers S fields decrease the average tilt angles and the N fields increase them. It was observed that 2-6 h are required for the effect of the magnetic field on the tilt angle to reach equilibrium. The strength of the magnetic field and the quality of the monolayer influence the time needed. The kinetic energy distribution of photoelectrons ejected with a left- or right-polarized laser is presented. The high-energy cutoff of the photoelectron spectra shows that upon reversing the direction of the layer from C- to N- bound, the work function increases by only 0.3eV. Charge redistribution process resulted in unpaired electrons on the adsorbed molecules.