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Article
Open AccessFull 2π tunable phase modulation using avoided crossing of resonances
Active metasurfaces have been proposed as one attractive means of achieving high-resolution spatiotemporal control of optical wavefronts, having applications such as LIDAR and dynamic holography. However, achi...
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Article
Mid-infrared radiative emission from bright hot plasmons in graphene
Carrier excitation and decay processes in graphene are of broad interest since relaxation pathways that are not present in conventional materials are enabled by a gapless Dirac electronic band structure. Here,...
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Article
Open AccessElectronically tunable extraordinary optical transmission in graphene plasmonic ribbons coupled to subwavelength metallic slit arrays
Subwavelength metallic slit arrays have been shown to exhibit extraordinary optical transmission, whereby tunnelling surface plasmonic waves constructively interfere to create large forward light propagation. ...
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Article
Electronic modulation of infrared radiation in graphene plasmonic resonators
All matter at finite temperatures emits electromagnetic radiation due to the thermally induced motion of particles and quasiparticles. Dynamic control of this radiation could enable the design of novel infrare...
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Article
Map** Dirac quasiparticles near a single Coulomb impurity on graphene
In metals, the Coulomb potential of charged impurities is strongly screened, but in graphene, the potential charge of a few-atom cluster of cobalt can extend up to 10 nm. By measuring differences in the way el...
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Article
Gate-controlled ionization and screening of cobalt adatoms on a graphene surface
By varying the voltage on an isolated gate electrode beneath a graphene sheet, the ionization state of cobalt atoms on its surface can be controlled. This enables the electronic structure of individual ionized...
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Article
Erratum: Origin of spatial charge inhomogeneity in graphene
Nature Physics 5, 722–726 (2009); published online: 30 August 2009; corrected after print: 24 December 2009. In the version of this Letter originally published, the first character of the label in Fig. 2c shou...
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Article
Origin of spatial charge inhomogeneity in graphene
One of the many unusual characteristics of graphene is that it shows ‘puddles’ of positive and negative charge throughout. A systematic scanning tunnelling microscope study shows that these puddles are not a c...
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Article
Giant phonon-induced conductance in scanning tunnelling spectroscopy of gate-tunable graphene
Scanning tunnelling spectra of a graphene field-effect transistor reveal an unexpected tenfold increase in conductance as a result of phonon-mediated inelastic tunnelling.
