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Type: Artigo de periódico
Title: Origin Of The A1g And B1g Electronic Raman Scattering Peaks In The Superconducting State Of Yba2cu3o 7-δ
Author: Martinho H.
Martin A.A.
Rettori C.
Lin C.T.
Abstract: The electronic Raman scattering was investigated in optimally oxygen-doped YBa2CU3O7-δ single crystals as well in crystals doped with nonmagnetic, Zn2+ and magnetic Ni2+ impurities. We found that the intensity of the A1g peak is impurity independent and its energy to Tc ratio is nearly constant (2Δ/kBTc∼5). Moreover, the signal at the B 1g channel is completely smeared out when nonmagnetic Zn2+ impurities are present. These results are discussed in terms of the current models of Devereaux et al., Venturini et al., and Zeyher and Greco.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.69.180501
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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