Nanoscale Interplay of Strain and Doping in a High-Temperature Superconductor
Markiewicz, Robert S.
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CitationZeljkovic, Ilija, Jouko Nieminen, Dennis Huang, Tay-Rong Chang, Yang He, Horng-Tay Jeng, Zhijun Xu, et al. 2014. “Nanoscale Interplay of Strain and Doping in a High-Temperature Superconductor.” Nano Letters 14, no. 12: 6749–6753.
AbstractThe highest-temperature superconductors are electronically inhomogeneous at the nanoscale, suggesting the existence of a local variable that could be harnessed to enhance the superconducting pairing. Here we report the relationship between local doping and local strain in the cuprate superconductor Bi2Sr2CaCu2O8+x. We use scanning tunneling microscopy to discover that the crucial oxygen dopants are periodically distributed in correlation with local strain. Our picoscale investigation of the intraunit-cell positions of all oxygen dopants provides essential structural input for a complete microscopic theory.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:14226036
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