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CM Seminar: Signature of preformed pairs in angle-resolved photoemission spectroscopy, Janez Bonca, University of Ljubljana
CM Seminar: Signature of preformed pairs in angle-resolved photoemission spectroscopy, Janez Bonca, University of Ljubljana
Speaker: Janez Bonca, University of Ljubljana Time: 10:00-11:00am Location: BRIM 311 Abstract: We use density matrix renormalization group (DMRG) and variational exact diagonalization (VED) to calculate the single-electron removal spectral weight for the Hubbard-Holstein model at low electron densities. Tuning the strength of the electron-phonon coupling and of the Hubbard repulsion allows us to contrast the […]
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CM Seminar: Electron-hole atomic double layers: towards high-temperature exciton condensation, Jie Shan, Cornell University
CM Seminar: Electron-hole atomic double layers: towards high-temperature exciton condensation, Jie Shan, Cornell University
Speaker: Jie Shan, Cornell University Time: 10:00-11:00am Location: BRIM 311 Topic: Electron-hole atomic double layers: towards high-temperature exciton condensation Abstract: Excitons, bound electron-hole pairs, in semiconductors are bosons that can form condensates. With a much smaller mass than atoms, they have been predicted to condense at a much higher temperature scale. Although the concept has been […]
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CM Seminar: Shedding nano-light on quantum materials, Columbia University, Dmitri Basov
CM Seminar: Shedding nano-light on quantum materials, Columbia University, Dmitri Basov
Speaker: Dmitri Basov Time: 10:00-11:00am Location: BRIM 311 Abstract: Optical spectroscopies have contributed immensely to the present understanding of metals, semiconductors and superconductors. Unfortunately, optics encounters problems when it comes to “seeing” effects at length scales below the diffraction limit of light and also with probing physics outside of the light cone. Both capabilities are highly […]
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CM Seminar: Complexity in Josephson Matter, Charles Marcus, University of Washington
CM Seminar: Complexity in Josephson Matter, Charles Marcus, University of Washington
Speaker: Charles Marcus, University of Washington Time: 10:00-11:00am Location: BRIM 311 Abstract: Hybrid superconductors-semiconductor heterostructures allow voltage control of carrier density in superconducting systems. We use these materials to investigate novel gate-controlled arrays of Josephson junctions in a variety of geometries, examining the interplay of quantum coherence, Coulomb interaction, and frustration. Using the example of the […]
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