Nanoscale interplay of strain and doping in a high-temperature superconductor.
Nano Lett
; 14(12): 6749-53, 2014 Dec 10.
Article
em En
| MEDLINE
| ID: mdl-25365704
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.
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01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cobre
/
Condutividade Elétrica
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Nanopartículas Metálicas
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Modelos Químicos
Tipo de estudo:
Prognostic_studies
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article