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arXiv · 0704.1698

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

Y. Okada·T. Takeuchi·T. Baba·S. Shin·H. Ikuta
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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.

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Y. Okada, T. Takeuchi, T. Baba, S. Shin, H. Ikuta. 2007-12-20. The origin of the anomalously strong influence of out-of-plane disorder on high-Tc superconductivity. https://doi.org/10.1143/jpsj.77.074714

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