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Ramasse, Q. M.
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Topics
Publications (12/12 displayed)
- 2024Existence and role of low energy charge-paramagnon modes in the strange metal phase of Bi$_2$Sr$_2$CaCu$_2$O$_{8+y}$
- 2016The effect of substrate clamping on the paraelectric to antiferroelectric phase transition in Nd-doped BiFeO3 thin filmscitations
- 2016The effect of substrate clamping on the paraelectric to antiferroelectric phase transition in Nd-doped BiFeO 3 thin filmscitations
- 2015Mapping strain modulated electronic structure perturbations in mixed phase bismuth ferrite thin filmscitations
- 2015Crystal structure and thermoelectric properties of Sr-Mo substituted CaMnO3citations
- 2015Tuning Thermoelectric Properties of Misfit Layered Cobaltites by Chemically Induced Straincitations
- 2014Dielectric response of pentagonal defects in multilayer graphene nano-conescitations
- 2013Topologically induced confinement of collective modes in multilayer graphene nanocones measured by momentum-resolved STEM-VEELScitations
- 2012Quantum confinement of volume plasmons and interband transitions in germanium nanocrystalscitations
- 2011Microstructural analysis of interfaces in a ferromagnetic- multiferroic epitaxial heterostructurecitations
- 2011Chemistry of Ruddlesden-Popper planar faults at a ferroelectric-ferromagnet perovskite interfacecitations
- 2010Atomic configuration of planar defects in multiferroic Ca-doped BiFeO 3 filmscitations
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article
Dielectric response of pentagonal defects in multilayer graphene nano-cones
Abstract
<p>The dielectric response of pentagonal defects in multilayer graphene nano-cones has been studied by electron energy loss spectroscopy and ab initio simulations. At the cone apex, a strong modification of the dielectric response is observed below the energy of the π plasmon resonance. This is attributed to π → π* interband transitions induced by topology-specific resonant π bonding states as well as π*-σ* hybridization. It is concluded that pentagonal defects strongly affect the local electronic structure in such a way that multi-walled graphene nano-cones should show great promise as field emitters.</p>