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Proc Natl Acad Sci U S A. 2008 Jul 22;105(29):9917-9. doi: 10.1073/pnas.0803215105. Epub 2008 Jul 14.

Quantum percolation in cuprate high-temperature superconductors.

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  • 1Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854-8019, USA.


Although it is now generally acknowledged that electron-phonon interactions cause cuprate superconductivity with T(c) values approximately 100 K, the complexities of atomic arrangements in these marginally stable multilayer materials have frustrated both experimental analysis and theoretical modeling of the remarkably rich data obtained both by angle-resolved photoemission (ARPES) and high-resolution, large-area scanning tunneling microscopy (STM). Here, we analyze the theoretical background in terms of our original (1989) model of dopant-assisted quantum percolation (DAQP), as developed further in some two dozen articles, and apply these ideas to recent STM data. We conclude that despite all of the many difficulties, with improved data analysis it may yet be possible to identify quantum percolative paths.

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