Nanoscale interplay of strain and doping in a high-temperature superconductor.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 25365704.
- Also identified by DOI 10.1021/nl501890k.
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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 Bi(2)Sr(2)CaCu(2)O(8+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.
Medical subject headings
- Copper
- Electric Conductivity
- Metal Nanoparticles
- Models, Chemical