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Impact of Calcium on Transport Property of Graphene
Jyoti Katoch, Masa Ishigami
We have measured the impact of calcium adsorbates on the transport property of graphene. Although calcium renders conductivity linearly dependent on the carrier density of graphene…
Multiphonon Raman Scattering in Graphene
Rahul Rao, Derek Tishler, Jyoti Katoch +1
We report multiphonon Raman scattering in graphene samples. Higher order combination modes involving 3 phonons and 4 phonons are observed in single-layer (SLG), bi-layer (BLG), and…
Effects of Layer Stacking on the Combination Raman modes in Graphene
Rahul Rao, Ramakrishna Podila, Ryuichi Tsuchikawa +4
We have observed new combination modes in the range from 1650 - 2300 cm-1 in single-(SLG), bi-, few-layer and incommensurate bilayer graphene (IBLG) on silicon dioxide substrates.…