title: Nanoscale interplay of strain and doping in a high-temperature superconductor.
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.
authors.affiliation: Department of Physics, Harvard University , Cambridge, Massachusetts 02138, United States.
authors.forename: Ilija
authors.initials: I
authors.lastname: Zeljkovic
authors.forename: Jouko
authors.initials: J
authors.lastname: Nieminen
authors.forename: Dennis
authors.initials: D
authors.lastname: Huang
authors.forename: Tay-Rong
authors.initials: TR
authors.lastname: Chang
authors.forename: Yang
authors.initials: Y
authors.lastname: He
authors.forename: Horng-Tay
authors.initials: HT
authors.lastname: Jeng
authors.forename: Zhijun
authors.initials: Z
authors.lastname: Xu
authors.forename: Jinsheng
authors.initials: J
authors.lastname: Wen
authors.forename: Genda
authors.initials: G
authors.lastname: Gu
authors.forename: Hsin
authors.initials: H
authors.lastname: Lin
authors.forename: Robert S
authors.initials: RS
authors.lastname: Markiewicz
authors.forename: Arun
authors.initials: A
authors.lastname: Bansil
authors.forename: Jennifer E
authors.initials: JE
authors.lastname: Hoffman
mesh_terms: D003198:Computer Simulation; D003300:Copper / Q000737:chemistry*; D055119:Elastic Modulus; D004553:Electric Conductivity; D006358:Hot Temperature; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D008956:Models, Chemical; D013718:Tensile Strength
chemical_list: D003300:Copper; C000520:cuprous oxide
keywords: Bi2Sr2CaCu2O8+x; High-Tc superconductors; cuprates; scanning tunneling microscopy; strain