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@article{Wong:2017:10.1103/PhysRevB.95.205419,
author = {Wong, D and Corsetti, F and Wang, Y and Brar, VW and Tsai, H-Z and Wu, Q and Kawakami, RK and Zettl, A and Mostofi, AA and Lischner, J and Crommie, MF},
doi = {10.1103/PhysRevB.95.205419},
journal = {Physical Review B},
title = {Spatially resolving density-dependent screening around a single charged atom in graphene},
url = {http://dx.doi.org/10.1103/PhysRevB.95.205419},
volume = {95},
year = {2017}
}

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TY  - JOUR
AB  - Electrons in two-dimensional graphene sheets behave as interacting chiral Dirac fermions and have unique screening properties due to their symmetry and reduced dimensionality. By using a combination of scanning tunneling spectroscopy measurements and theoretical modeling we have characterized how graphene's massless charge carriers screen individual charged calcium atoms. A backgated graphene device configuration has allowed us to directly visualize how the screening length for this system can be tuned with carrier density. Our results provide insight into electron-impurity and electron-electron interactions in a relativistic setting with important consequences for other graphene-based electronic devices.
AU  - Wong,D
AU  - Corsetti,F
AU  - Wang,Y
AU  - Brar,VW
AU  - Tsai,H-Z
AU  - Wu,Q
AU  - Kawakami,RK
AU  - Zettl,A
AU  - Mostofi,AA
AU  - Lischner,J
AU  - Crommie,MF
DO  - 10.1103/PhysRevB.95.205419
PY  - 2017///
SN  - 2469-9950
TI  - Spatially resolving density-dependent screening around a single charged atom in graphene
T2  - Physical Review B
UR  - http://dx.doi.org/10.1103/PhysRevB.95.205419
UR  - http://hdl.handle.net/10044/1/45892
VL  - 95
ER  -

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