Zobrazeno 1 - 10
of 283
pro vyhledávání: '"Hartmut Haug"'
Publikováno v:
Physical Review B. 102
We extend the description of the nonequilibrium Gross-Pitaevskii equation for microcavity polaritons by including not only the kinetics of the nonresonantly pumped exciton reservoir but also that of the collective excitations---called bogolons---abov
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https://explore.openaire.eu/search/publication?articleId=doi_________::d7ae54094e59b47ee00b5d9b62d56ba0
https://doi.org/10.1103/physrevb.102.165126
https://doi.org/10.1103/physrevb.102.165126
Publikováno v:
Reviews of Modern Physics. 82:1489-1537
In the past decade, a two-dimensional matter-light system called the microcavity exciton-polariton has emerged as a new promising candidate of Bose-Einstein condensation BEC in solids. Many pieces of important evidence of polariton BEC have been esta
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https://explore.openaire.eu/search/publication?articleId=doi_________::ecb048dc0c3c4e031b07523f8d3c18d4
https://doi.org/10.1103/revmodphys.82.1489
https://doi.org/10.1103/revmodphys.82.1489
Publikováno v:
Solid State Communications. 145:48-51
We apply a semi-classical Boltzmann kinetics for a gas of laser-pulse excited microcavity polaritons taking into account their mutual interaction and their interaction with acoustic phonons. Fitting the temporally evolving polariton distribution abov
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https://explore.openaire.eu/search/publication?articleId=doi_________::0c88e03e11a147bd2b91e1856d450a37
https://doi.org/10.1016/j.ssc.2007.09.034
https://doi.org/10.1016/j.ssc.2007.09.034
Publikováno v:
Solid State Communications. 144:359-363
The applied Boltzmann relaxation kinetics for stationary and ps-pulsed nonresonant pumping takes the polariton–acoustic phonon and the polariton–polariton scattering into account. For cavities with a vacuum Rabi splitting around Ω = 8 meV , we f
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https://explore.openaire.eu/search/publication?articleId=doi_________::d994914e9e1cd64b18c625b5bb175676
https://doi.org/10.1016/j.ssc.2007.07.038
https://doi.org/10.1016/j.ssc.2007.07.038
Publikováno v:
Physical Review B. 91
vortex-antivortex pairs, but beyond that, yield an image of the superfluid flow patterns linked with the structured condensate density. The fast superfluid flow driven by the spatially changing phase with velocities of the order of several mμ/ps is
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https://explore.openaire.eu/search/publication?articleId=doi_________::ed001a17809a35cad1010074cb783288
https://doi.org/10.1103/physrevb.91.195311
https://doi.org/10.1103/physrevb.91.195311
Autor:
Hartmut Haug
Publikováno v:
Solid State Communications. 134:3-9
Photo-excited excitons are in the low-density regime approximately bosons. For low enough temperatures and high enough densities of the exciton gas, a non-equilibrium phase transition in the form of a Bose–Einstein condensation (BEC) can be expecte
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https://explore.openaire.eu/search/publication?articleId=doi_________::09b3c1f9402173a55a0e6bbb33e3481f
https://doi.org/10.1016/j.ssc.2004.11.051
https://doi.org/10.1016/j.ssc.2004.11.051
Autor:
Hartmut Haug
Publikováno v:
Progress in Quantum Electronics. 29:261-296
The 1984 review in this journal wrapped up the quasi-equilibrium many-body theory which was used quite successfully to describe the optical properties of bulk semiconductors at that time. The starting point was to express the optical dielectric funct
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https://explore.openaire.eu/search/publication?articleId=doi_________::01333002a0eb7088592a66f88cf2a9ba
https://doi.org/10.1016/j.pquantelec.2005.10.001
https://doi.org/10.1016/j.pquantelec.2005.10.001
Publikováno v:
Physical Review B. 89
The space and time dependent nonequilibrium Keldysh-Green functions are employed to derive the scattering rates between the condensed microcavity polaritons described by a Gross-Pitaevskii equation and an uncondensed higher lying exciton reservoir. S
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https://explore.openaire.eu/search/publication?articleId=doi_________::dc9940f045ec935e6c060d7c8809c17f
https://doi.org/10.1103/physrevb.89.155302
https://doi.org/10.1103/physrevb.89.155302
Autor:
G. Göger, Ladislaus Alexander Bányai, Hartmut Haug, Markus Betz, Alfred Laubereau, Alfred Leitenstorfer, K. Ortner, C. R. Becker, Paul Gartner
Publikováno v:
Physical Review Letters. 86:4684-4687
Femtosecond transmission spectra of highly polar CdTe are compared to more covalent GaAs contrasting semiclassical kinetics with two-time quantum kinetics based on the Dyson equation. Nonequilibrium heavy holes in CdTe show ultrafast energy redistrib
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https://doi.org/10.1103/physrevlett.86.4684
https://doi.org/10.1103/physrevlett.86.4684
Autor:
Hartmut Haug, Q. T. Vu
Publikováno v:
Physical Review B. 62:7179-7185
For a nonequilibrium electron system in semiconductors the time-dependent screened effective interaction due to longitudinal optical phonon and Coulomb scattering is derived. The polarization is described in terms of a time-dependent random-phase app
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68495d0cd71699d22dce0379c22fc7ff
https://doi.org/10.1103/physrevb.62.7179
https://doi.org/10.1103/physrevb.62.7179