Abstract
For the purpose of recovering the intriguing electronic properties of freestanding graphene at a solid surface, graphene self-organized on a Au monolayer on Ni(111) is prepared and characterized by scanning tunneling microscopy. Angle-resolved photoemission reveals a gapless linear -band dispersion near as a fingerprint of strictly monolayer graphene and a Dirac crossing energy equal to the Fermi energy () within 25 meV meaning charge neutrality. Spin resolution shows a Rashba effect on the states with a large () spin-orbit splitting up to which is independent of .
- Received 15 March 2008
DOI:https://doi.org/10.1103/PhysRevLett.101.157601
©2008 American Physical Society