期刊
NANO LETTERS
卷 12, 期 8, 页码 3900-3904出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl300512q
关键词
Graphene; sublattice symmetry; isospin; circular dichroism; ARPES
类别
资金
- Deutsche Forschungsgemeinschaft
- National Science Foundation [DMR-0537588]
The Dirac-like electronic structure of graphene originates from the equivalence of the two basis atoms in the honeycomb lattice. We show that the characteristic parameters of the initial state wave function (sublattice symmetry and isospin) can be determined using angle-resolved photoemission spectroscopy (ARPES) with circularly polarized synchrotron radiation. At a photon energy of h nu = 52 eV, transition matrix element effects can be neglected allowing us to determine sublattice symmetry and isospin with high accuracy using a simple theoretical model.
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