Raman Spectrum of Graphene and Graphene Layers
Andrea C. FerrariCambridge University, Engineering Department, JJ Thompson Avenue, Cambridge CB3 0FA, United Kingdom. [email protected]Jannik C. MeyerMax Planck Institute for Solid State Research, Stuttgart 70569, GermanyVittorio ScardaciCambridge University, Engineering Department, JJ Thompson Avenue, Cambridge CB3 0FA, United KingdomCinzia CasiraghiCambridge University, Engineering Department, JJ Thompson Avenue, Cambridge CB3 0FA, United KingdomMichele LazzeriIMPMC, Universités Paris 6 et 7, CNRS, IPGP, 140 rue de Lourmel, 75015 Paris, FranceFrancesco MauriIMPMC, Universités Paris 6 et 7, CNRS, IPGP, 140 rue de Lourmel, 75015 Paris, FranceS. PiscanecCambridge University, Engineering Department, JJ Thompson Avenue, Cambridge CB3 0FA, United KingdomDa JiangDepartment of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, United KingdomKostya S. NovoselovDepartment of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, United KingdomS. RothMax Planck Institute for Solid State Research, Stuttgart 70569, GermanyA. K. GeǐmDepartment of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, United Kingdom
2006en
ABI
Аннотация
Graphene is the two-dimensional building block for carbon allotropes of every other dimensionality. We show that its electronic structure is captured in its Raman spectrum that clearly evolves with the number of layers. The D peak second order changes in shape, width, and position for an increasing number of layers, reflecting the change in the electron bands via a double resonant Raman process. The G peak slightly down-shifts. This allows unambiguous, high-throughput, nondestructive identification of graphene layers, which is critically lacking in this emerging research area.
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