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Pseudo Relativistic Quantum Physics and Graphene

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When	Sep 21, 2022 from 12:45 pm to 01:45 pm
Speaker	Godfrey Gumbs, Ph.D
Speaker Information	Dr. Godfrey Gumbs is Maria A. Chianta and Alice M. Stoll and University Distinguished Professor at Department of Physics and Astronomy, Hunter College of the City University of New York. He has established an international reputation in the field of condensed matter physics and material science research in semiconductor and quantum device simulation. Publications cover plasmon excitations in graphene, silicene, and phosphorene, dipolar excitons in double-layer graphene and their Bose-Einstein condensation, superfluidity, and quantum entanglement, magnetic field effects and Landau quantization on the optical response and Boltzmann transport of these low-dimensional materials. Dr. Godfrey Gumbs is Fellow of the American Physical Society (APS), the Institute of Physics (UK), the New York Academy of Science, and a recipient of the Bouchet Award by the APS.
Where	1311 HN
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Pseudo Relativistic Quantum Physics and Graphene

Femtosecond and subfemtosecond time scales typically rule electron dynamics at conductor surfaces. Recent advances in experimental techniques allow the experimental study of such dynamics. In this talk we shall analyze electron dynamics at the surfaces of nanostructures with emphasis on screening, chirality and spin dependence of charge transfer, plasmonics, dipolar excitons in double layer graphene and the associated superfluidity and Bose-Einstein condensation. We will discuss the effect of energy gaps on possible "Veselago lenses" for completely flat grapheme sheets. We will also discuss how plasmon instabilities may be exploited for tunable radiation generation which may be employed in detectors.