Quantum Corrections in Nanoplasmonics: Shape, Scale, and Material

Abstract : The classical treatment of plasmonics is insufficient at the nanometer-scale due to quantum mechanical surface phenomena. Here, an extension of the classical paradigm is reported which rigorously remedies this deficiency through the incorporation of first-principles surface response functions—the Feibelman d parameters—in general geometries. Several analytical results for the leading-order plasmonic quantum corrections are obtained in a first-principles setting; particularly, a clear separation of the roles of shape, scale, and material is established. The utility of the formalism is illustrated by the derivation of a modified sum rule for complementary structures, a rigorous reformulation of Kreibig's phenomenological damping prescription, and an account of the small-scale resonance shifting of simple and noble metal nanostructures.
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Thomas Christensen, Wei Yan, A.-P. Jauho, Marin Soljačić, N. Asger Mortensen. Quantum Corrections in Nanoplasmonics: Shape, Scale, and Material. Physical Review Letters, American Physical Society, 2017, 118, pp.57402. ⟨10.1103/PhysRevLett.118.157402⟩. ⟨hal-01549547⟩

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