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5 papers · 2 filters
Raman Spectroscopy of Graphene under Uniaxial Stress: Phonon Softening and Determination of the Crystallographic Orientation
Mingyuan Huang, Hugen Yan, Changyao Chen +3
We present a systematic study of the Raman spectra of optical phonons in graphene monolayers under tunable uniaxial tensile stress. Both the G and 2D bands exhibit significant red…
Relationship between the atomic pair distribution function and small angle scattering: implications for modeling of nanoparticles
Christopher L. Farrow, Simon J. L. Billinge
Here we show explicitly the relationship between the functions used in the atomic pair distribution function (PDF) method and those commonly used in small angle scattering (SAS) an…
Measurement of the Optical Conductivity of Graphene
Kin Fai Mak, Matthew Y. Sfeir, Yang Wu +3
Optical reflectivity and transmission measurements over photon energies between 0.2 and 1.2 eV were performed on single-crystal graphene samples on a transparent SiO2 substrate. Fo…
Linear Augmented Slater-Type Orbital Method for Free Standing Clusters
K. S. Kang, J. W. Davenport, James Glimm +2
We have developed a Scalable Linear Augmented Slater-Type Orbital (LASTO) method for electronic-structure calculations on free-standing atomic clusters. As with other linear method…
Spectro-microscopy of single and multi-layer graphene supported by a weakly interacting substrate
Kevin R. Knox, Shancai Wang, Alberto Morgante +6
We report measurements of the electronic structure and surface morphology of exfoliated graphene on an insulating substrate using angle-resolved photoemission and low energy electr…