1992
DOI: 10.1002/pssb.2221690126
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Reflectivity Spectra of YBa2Cu3O7−x in the 0.6 to 6.1 eV Range Evidence for Excitonic Absorption

Abstract: Reflectance measurements at room temperature (298 K) on ceramic YBa,Cu,O, --x in the spectral range 0.6 to 6.1 eV and subsequent Kramers-Kronig analyses of the spectra indicate the presence of excitations at 1.0, 2.1, 3.6, and 5.7 eV. It is argued that there is enough evidence to consider the 1.0 and 2.1 eV excitations as excitons.Messungen des Reflexionsvermogens bei Zimmertemperatur (298 K) an YBa2Cu,0, -,-Keramiken im Spektralbereich von 0,6 bis 6,l eV und anschliel3ende Kramers-Kronig-Analyse der Spektren … Show more

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Cited by 4 publications
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“…One should mention that the reflexion spectrum of 123 shows also a strong peak at 5.7 eV. 23 Another reflexion spectrum measurement of YBa 2 Cu 3 O 6.9…”
Section: Results and Their Discussionmentioning
confidence: 99%
“…One should mention that the reflexion spectrum of 123 shows also a strong peak at 5.7 eV. 23 Another reflexion spectrum measurement of YBa 2 Cu 3 O 6.9…”
Section: Results and Their Discussionmentioning
confidence: 99%