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Showing 1 to 11 of 11 for “"Biexcitons"”.
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Thermodynamics of excitons and biexcitons in a gallium arsenide multiple quantum well
Made available in DSpace on 2011-05-07T13:37:18Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9625149.pdf: 4752052 bytes, checksum: 03e9b485820c6c57ed75478c3607a3b1 (MD5) Previous issue date: 1996
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Quantum Monte Carlo study of low dimensional materials
… BEs for vdW structures. Next, the BEs of 2D biexcitons are studied at different mass ratios and a variety of screening lengths. Our exact DMC results show that the BEs of biexcitons in different kinds of transition-metal dichalcogenides are in the range 15 − 30 meV bound at room temperature. …
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Application of quantum Monte Carlo methods to excitonic and electronic systems
… functions for electrons and holes in bound biexcitons. We find a larger region of biexciton stability than other recent work [C. Schindler and R. Zimmermann, Phys. Rev. B 78, 045313 (2008)]. We also find that individual excitons retain their identity in bound biexcitons for large layer …
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Low-dimensional quantum systems
… of two (excitons), three (trions) and four (biexcitons) charge carriers in two-dimensional semiconductors. The fermions interact through an effective interaction of a form introduced by Keldysh. Our study also includes impurity-bound complexes. We provide a classification of trions and …
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Quantum Monte Carlo simulations of electrons and holes
… temperature the spin-unpolarized system forms biexcitons. Since we are interested in Bose condensation, we study a spin-polarized system, which has no biexcitons. Restricted paths are used to handle the Fermion sign problem. With an appropriate choice of paired nodes for the restricted path …
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OPTICAL BISTABILITY IN ZINC-SULFIDE AND ZINC-SELENIDE THIN-FILM INTERFERENCE FILTERS AND IN GALLIUM-ARSENIDE AND COPPER-CHLORIDE ETALONS (NONLINEAR).
… involves the creation of a virtual excitation of biexcitons which decay to the longitudinal exciton state.
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Coherent multi-exciton dynamics in semiconductor nanostructures via two-dimensional Fourier transform optical spectroscopy
… electronic excitations (i.e. excitons, biexcitons, etc.) which may be harnessed for applications in quantum optics, light-harvesting, or quantum information technologies. These excitations represent correlations among successively greater numbers of electrons and holes, and their …
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Coherent light-matter interactions in monolayer transition-metal dichalcogenides
… former, bound excitonic quasiparticles such as biexcitons play a unique role in coherent light-matter interactions where they couple the two valleys to induce opposite energy shifts. In the latter, non-bonding interactions between excitons are found to exhibit energy shifts that effectively …
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Single and multi-exciton dynamics in nanoscale semiconductors
… observation of two-exciton correlations (i.e. biexcitons) in cuprous oxide. The direct measurement of two-exciton correlations supports the proposed mechanism of biexciton-Auger recombination for the efficient suppression of the Bose-Einstein condensation of excitons. Third, we use …
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Excitons in Two-Dimensional Materials: from Many-Body Physics to Quantum Technologies
… to charge-mediated interactions. In particular, biexcitons are bound exciton pairs that hold great interest from a fundamental standpoint as the simplest building block in coherent multi-exciton phenomena and for applications such as sources of entangled photons. In this Thesis I show direct …
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Investigating exciton correlations using coherent multidimensional optical spectroscopy
… four-particle correlations in the form of bound biexcitons and unbound-but-correlated exciton pairs. We also measure signals due to six-particle correlations in the form of bound triexcitons. Although we searched for them, there were no signals due to eight-particle correlations, indicating that …