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- W2034691662 endingPage "11119" @default.
- W2034691662 startingPage "11113" @default.
- W2034691662 abstract "Excitonic transitions and phonon frequencies in ${mathrm{Cu}}_{2}$O were measured by luminescence and Raman spectroscopy at hydrostatic pressures up to 8.5 GPa and at a temperature of 6 K. The exciton Rydberg energy is found to decrease at a rate of -2.4 meV/GPa. The band gap increases at a rate of 12.5 meV/GPa, which corresponds to a band-gap deformation potential of -1.38 eV. The electron-hole exchange energy, i.e., the energy difference between orthoexciton and paraexciton, is independent of pressure. The mode Gruneisen parameters for the zone-center phonons vary between -3.4 and +1.7. A rigid-ion model for the pressure dependence of k=0 phonon frequencies yields mode Gruneisen parameters which are consistent with the experimental data." @default.
- W2034691662 created "2016-06-24" @default.
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- W2034691662 date "1989-05-15" @default.
- W2034691662 modified "2023-10-04" @default.
- W2034691662 title "Raman scattering and photoluminescence in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Cu</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>O under hydrostatic pressure" @default.
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- W2034691662 doi "https://doi.org/10.1103/physrevb.39.11113" @default.
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