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Role of the Cu-O charge-transfer energy in the superconductivity of cuprates: Evidence from Cu 2p core-level spectroscopy and theory
, Rao C.N.R., Rajumon M.K., Sarma D.D.
Published in American Physical Society
1990
Volume: 42
   
Issue: 1
Pages: 1026 - 1028
Abstract
Based on Cu 2p core-level spectroscopy and theoretical calculations, it has been demonstrated that the Cu-O charge-transfer excitation energy which determines the Cu 2p satellite intensity also plays a crucial role in the superconductivity of cuprates. The relative intensity of the satellite generally decreases with an increase in the Tc or in the hole concentration in a given series of cuprate superconductors. In the case of Bi2Ca1-xRxSr2Cu2O8+ (R=rare earth), the satellite intensity goes through a minimum around the same composition where the hole concentration as well as the Tc show maxima. © 1990 The American Physical Society.
About the journal
JournalData powered by TypesetPhysical Review B
PublisherData powered by TypesetAmerican Physical Society
ISSN2469-9950
Open AccessNo