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Alex Zunger
Researcher at University of Colorado Boulder
Publications - 838
Citations - 85746
Alex Zunger is an academic researcher from University of Colorado Boulder. The author has contributed to research in topics: Band gap & Electronic structure. The author has an hindex of 128, co-authored 826 publications receiving 78798 citations. Previous affiliations of Alex Zunger include Tel Aviv University & University of Wisconsin-Madison.
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Addition energies and quasiparticle gap of CdSe nanocrystals
TL;DR: In this article, the quasiparticle gap, the optical gap and the electron and hole addition energies of CdSe nanocrystals were calculated using atomistic pseudopotential wave functions.
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Quantum-confinement-induced Gamma -->X transition in GaAs/AlGaAs quantum films, wires, and dots.
TL;DR: In the case of spherical GaAs quantum dots embedded in an Al{sub {ital x}}Ga{sub 1{minus} x}}As alloy, it is shown that, as a function of the dot radius and the alloy composition, different alignments of the band-edge states lead to different regimes of the lowest-energy optical transition.
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Exchange-correlation-induced "negative effective U"
TL;DR: An independent microscopic mechanism: stabilization of electron-rich configurations through exchange interactions is proposed, illustrated for an unrelaxed interstitial Cr impurity in Si through a self-consistent local-spin-density Green's-function calculation.
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Topological Insulators versus Topological Dirac Semimetals in Honeycomb Compounds.
TL;DR: A general chemical classification for the two quantum phases in the honeycomb ABX structure-topological insulator (TI) and topological Dirac semimetal (TDSM) is uncovered, and a structural motif is found that delivers topological insulation and stability at the same time.
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Spontaneous surface-induced long-range order in Ga0.5In0.5P alloys.
TL;DR: First-principles local-density total-energy calculations for bulk bulk GaAs-P films grown on a lattice-matched GaAs substrate are presented and electronically driven surface reconstructions, consisting not only of the previously known cation dimerization, but also of buckling and tilting of the surface dimers are found.