Nanoscale Interplay of Strain and Doping in a High-Temperature Superconductor

 
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Zeljkovic, Ilija
Nieminen, Jouko
Huang, Dennis
Chang, Tay-Rong
He, Yang
Jeng, Horng-Tay
Xu, Zhijun
Wen, Jinsheng
Gu, Genda
Lin, Hsin
Markiewicz, Robert S.
Bansil, Arun
Note: Order does not necessarily reflect citation order of authors.
Published Version
https://doi.org/10.1021/nl501890k
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Zeljkovic, 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.
Abstract
The 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.
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http://nrs.harvard.edu/urn-3:HUL.InstRepos:14226036

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