Anomalous intensity of the 335 cm−1 phonon in YBa2Cu3O7−δ
Physica C. Bd. 175. H. 1/2. 1991 S. 89 - 92
Erscheinungsjahr: 1991
ISBN/ISSN: 0921-4534
Publikationstyp: Zeitschriftenaufsatz
Sprache: Englisch
Doi/URN: 10.1016/0921-4534(91)90238-T
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Inhaltszusammenfassung
We report results on Raman scattering for the intensity of the 335 cm?1 phonon of Ag (pseudo B1g) symmetry in thin YBa2Cu3O7?? films on MgO and LaAlO3 substrates. The intensity of this phonon shows a pronounced increase below 100 K and saturates at low temperatures. We also observe an additional intensity peaking at temperatures close to the superconducting transition TC. This may indicate a structural phase transition in the vicinity of TC.
Autoren
Li, R. (Autor)
Weimer, U. (Autor)
Feile, R. (Autor)
Tomé-Rosa, C. (Autor)
Klassifikation
DFG Fachgebiet:
Physik der kondensierten Materie
DDC Sachgruppe:
Physik
