6533b860fe1ef96bd12c2e54

RESEARCH PRODUCT

Anomalous intensity of the 335 cm−1 phonon in YBa2Cu3O7−δ

Rudolf FeileH. AdrianR. LiU. WeimerC. Tomé-rosa

subject

chemistry.chemical_classificationSuperconductivityMaterials scienceHigh-temperature superconductivityCondensed matter physicsPhononEnergy Engineering and Power TechnologyCondensed Matter PhysicsElectronic Optical and Magnetic Materialslaw.inventionsymbols.namesakechemistrylawsymbolsElectrical and Electronic EngineeringAnomaly (physics)Thin filmInorganic compoundIntensity (heat transfer)Raman scattering

description

Abstract We report results on Raman scattering for the intensity of the 335 cm −1 phonon of A g (pseudo B 1g ) symmetry in thin YBa 2 Cu 3 O 7−δ films on MgO and LaAlO 3 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 T C . This may indicate a structural phase transition in the vicinity of T C .

yearjournalcountryeditionlanguage
1991-04-01Physica C: Superconductivity
https://doi.org/10.1016/0921-4534(91)90238-t