The origin of the anomalously strong influence of out-of-plane disorder on high-Tc superconductivity

Abstract

The electronic structure of Bi2Sr2-xRxCuOy(R=La, Eu) near the (pi,0) point of the first Brillouin zone was studied by means of angle-resolved photoemission spectroscopy (ARPES). The temperature T* above which the pseudogap structure in the ARPES spectrum disappears was found to have an R dependence that is opposite to that ofthe superconducting transition temperature Tc. This indicates that the pseudogap state is competing with high-Tc superconductivity, and the large Tc suppression observed with increasing the out-of-plane disorder is due to the stabilization of the pseudogap state.

4 pages, 4 figures

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Cited by in corpus (12)

• Energy gaps in high-transition temperature cuprate superconductors
• Universal versus Material-Dependent Two-Gap Behaviors in the High-Tc Cuprates: Angle-Resolved Photoemission Study of La2-xSrxCuO4
• Enhanced superconducting gaps in the tri-layer high-$T_c$ cuprate Bi${}_2$Sr${}_2$Ca${}_2$Cu${}_3$O${}_{10+\delta }$
• Effects of out-of-plane disorder on the nodal quasiparticle and superconducting gap in single-layer Bi${}_2$Sr${}_{1.6}L{n}_{0.4}$CuO${}_{6+\delta }$ ($Ln$ = La, Nd, Gd)
• Three energy scales characterizing the competing pseudogap state, the incoherent, and the coherent superconducting state in high-Tc cuprates
• Growth and post-annealing studies of La-Bi2201 single crystals
• Enhancement of superconducting fluctuation under the coexistence of a competing pseudogap state in Bi2Sr2-xRxCuOy
• High-temperature superconductors as ionic metals
• Zn-impurity effects on quasi-particle scattering in La2-xSrxCuO4 studied by angle-resolved photoemission spectroscopy
• Fermi arcs and pseudogap emerging from dimensional crossover at the Fermi surface in La${}_{2-x}$Sr${}_x$CuO${}_4$
• Disorder Effects on Competition between Antiferromagnetism and Superconductivity in Cuprate Superconductors through the Enhancement in Charge Susceptibility
• Momentum dependence of the energy gap in the superconducting state of optimally doped Bi2(Sr,R)2CuOy (R=La and Eu)