The Yellow Excitonic Series of Cu2O Revisited by Lyman Spectroscopy

Takeshi Tayagaki 1 André Mysyrowicz 2 Makoto Kuwata-Gonokami 3
1 SORST - Solution Oriented Research for Science and Technology
2 LOA - Laboratoire d'optique appliquée
3 Department of Applied Physics
Abstract : We report on the observation of the yellow exciton Lyman series up to the fourth term in Cu2O by time-resolved mid-infrared spectroscopy. The dependence of oscillator strength on the principal quantum number n can be well reproduced using the hydrogenic model including an AC dielectric constant, and precise information on the electronic structure of the 1s exciton state can be obtained. A Bohr radius a1s=7.9 Å and a 1s–2p transition dipole moment µ1s–2p=4.2 eÅ were found.
keyword : exciton Lyman series Cu2O central cell correction mid-infrared ultrafast spectroscopy
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Journal articles
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Submitted on : Saturday, March 13, 2010 - 1:39:40 AM
Last modification on : Wednesday, July 3, 2019 - 10:48:02 AM

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Takeshi Tayagaki, André Mysyrowicz, Makoto Kuwata-Gonokami. The Yellow Excitonic Series of Cu2O Revisited by Lyman Spectroscopy. Journal of the Physical Society of Japan, Physical Society of Japan 日本物理学会, 2005, 74, pp.1423-1426. ⟨10.1143/JPSJ.74.1423⟩. ⟨hal-00463618⟩

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