Defect-induced changes in the spectral properties of Bi2Sr2CaCu2O8+x: Angle-resolved photoemission study
We investigated the effects of disorder in Bi2Sr2CaCu2O8+x high temperature superconductor. We found that small defect densities already suppress the characteristic spectral signature of the superconducting state. The spectral line shape clearly reflects new excitations within the gap, as expected for defect-induced pair breaking.
WOS:000084373900032
1999
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Ecole Polytech Fed Lausanne, Inst Phys Appl, CH-1015 Lausanne, Switzerland. Ecole Polytech, CEA, Solides Irradies Lab, F-91128 Palaiseau, France. Ecole Polytech Fed Lausanne, IGA, Lab Phys Solides Semicristallins, CH-1015 Lausanne, Switzerland. Vobornik, I, Ecole Polytech Fed Lausanne, Inst Phys Appl, CH-1015 Lausanne, Switzerland.
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