  We report preparation of large area quasi-1D monolayer graphene superlattices
on a prototypical high index surface Cu(410)-O and characterization by Raman
spectroscopy, Auger electron spectroscopy (AES), low energy electron
diffraction (LEED), scanning tunneling microscopy (STM) and scanning tunneling
spectroscopy (STS). The periodically stepped substrate gives a 1D modulation to
graphene, forming a superlattice of the same super-periodicity. Consequently
the moire pattern is also quasi-1D, with a different periodicity. Scanning
tunneling spectroscopy measurements revealed new Dirac points formed at the
superlattice Brillouin zone boundary as predicted by theories.
