  We theoretically investigate the interaction of moderate intensity
near-infrared few cycle laser pulses with nano-scale metal tips. Local field
enhancement in a nanometric region around the tip apex triggers coherent
electron emission on the nanometer length and femtosecond time scale. The
quantum dynamics at the surface are simulated with time-dependent density
functional theory (TDDFT) and interpreted based on the simple man's model. We
investigate the dependence of the emitted electron spectra on the laser
wavelength.
