  Chiral oligopeptide monolayers were adsorbed on a ferromagnetic surface and
their magnetoresistance was measured as a function of the angle between the
magnetization of the ferromagnet and the surface normal. These measurements
were conducted as a function of temperature for both enantiomers. The angle
dependence was found to follow the cosine square function. Quantum simulations
revealed that the angular distribution could be obtained only if the monolayer
has significant effective spin orbit coupling (SOC), that includes contribution
from the vibrations. The model shows that SOC only in the leads cannot
reproduce the observed angular dependence. The simulation can reproduce the
experiments only if it included electron-phonon interactions and dissipation.
