Dynamic inhomogeneities in the La2CuO4-based superconductors

Edward A. Stern; Sang Wook Han; Daniel Haskel

doi:10.1023/b:josc.0000011849.77303.e6

Dynamic inhomogeneities in the La₂CuO₄-based superconductors

Edward A. Stern
, Sang Wook Han
, Daniel Haskel

University of Washington
United States Department of Energy

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Polarization-dependent X-ray-absorption fine-structure (XAFS) measurements on the local structure of the La₂CuO₄-based high-T _c superconductors La_2-xSr_xCuO₄, La_2-xBa_xCuO₄, and La_1.6-xSr _xNd_0.4CuO₄ find, among others, orientation disorder induced in the Cu-O₂ planes by doping Sr, Ba, and alloying Nd atoms, all such atoms residing in La-sites. The orientation disorder is of two types: mostly static-buckling disorder, and dynamic disordering of the tilt angles of the Cu-O₆ octahedra correlated in nanoscale regions, with respect to neighboring nanoscale regions. Buckling disorder in the Cu-O ₂ planes has the greatest detrimental effect on T_c and conductivity for such foreign atoms.

Original language	English
Pages (from-to)	97-102
Number of pages	6
Journal	Journal of Superconductivity and Novel Magnetism
Volume	17
Issue number	1
DOIs	https://doi.org/10.1023/b:josc.0000011849.77303.e6
State	Published - 2004
Externally published	Yes

Bibliographical note

Funding Information:
We are indebted to our collaborators V. Polinger, F. Dogan, A. R. Moodenbaugh, J. D. Jorgensen, and to our colleagues J. Tranquada, and Y. Yacoby for their help and informative discussions. This research could not have been done without the support from the U.S. DOE, Office of Science, Grants Nos. DE-FG03-98ER45681 and DE-FG03-97ER45628 (E.A.S. and S.-W. H.) and Contract No. W-31-109-ENG-38 (D. H.).

Funding

We are indebted to our collaborators V. Polinger, F. Dogan, A. R. Moodenbaugh, J. D. Jorgensen, and to our colleagues J. Tranquada, and Y. Yacoby for their help and informative discussions. This research could not have been done without the support from the U.S. DOE, Office of Science, Grants Nos. DE-FG03-98ER45681 and DE-FG03-97ER45628 (E.A.S. and S.-W. H.) and Contract No. W-31-109-ENG-38 (D. H.).

Funders
U.S. DOE
Office of Science

Keywords

Dynamic inhomogeneities
High-T
LaCuO-based superconductors
Orientation disorder

Access to Document

10.1023/b:josc.0000011849.77303.e6

Cite this

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title = "Dynamic inhomogeneities in the La2CuO4-based superconductors",

abstract = "Polarization-dependent X-ray-absorption fine-structure (XAFS) measurements on the local structure of the La2CuO4-based high-T c superconductors La2-xSrxCuO4, La2-xBaxCuO4, and La1.6-xSr xNd0.4CuO4 find, among others, orientation disorder induced in the Cu-O2 planes by doping Sr, Ba, and alloying Nd atoms, all such atoms residing in La-sites. The orientation disorder is of two types: mostly static-buckling disorder, and dynamic disordering of the tilt angles of the Cu-O6 octahedra correlated in nanoscale regions, with respect to neighboring nanoscale regions. Buckling disorder in the Cu-O 2 planes has the greatest detrimental effect on Tc and conductivity for such foreign atoms.",

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AU - Haskel, Daniel

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N2 - Polarization-dependent X-ray-absorption fine-structure (XAFS) measurements on the local structure of the La2CuO4-based high-T c superconductors La2-xSrxCuO4, La2-xBaxCuO4, and La1.6-xSr xNd0.4CuO4 find, among others, orientation disorder induced in the Cu-O2 planes by doping Sr, Ba, and alloying Nd atoms, all such atoms residing in La-sites. The orientation disorder is of two types: mostly static-buckling disorder, and dynamic disordering of the tilt angles of the Cu-O6 octahedra correlated in nanoscale regions, with respect to neighboring nanoscale regions. Buckling disorder in the Cu-O 2 planes has the greatest detrimental effect on Tc and conductivity for such foreign atoms.

AB - Polarization-dependent X-ray-absorption fine-structure (XAFS) measurements on the local structure of the La2CuO4-based high-T c superconductors La2-xSrxCuO4, La2-xBaxCuO4, and La1.6-xSr xNd0.4CuO4 find, among others, orientation disorder induced in the Cu-O2 planes by doping Sr, Ba, and alloying Nd atoms, all such atoms residing in La-sites. The orientation disorder is of two types: mostly static-buckling disorder, and dynamic disordering of the tilt angles of the Cu-O6 octahedra correlated in nanoscale regions, with respect to neighboring nanoscale regions. Buckling disorder in the Cu-O 2 planes has the greatest detrimental effect on Tc and conductivity for such foreign atoms.

KW - Dynamic inhomogeneities

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