Nanostructure in the La2CuO4 based superconductors

Edward A. Stern; Daniel Haskel

doi:10.1117/12.455492

Nanostructure in the La₂CuO₄ based superconductors

Edward A. Stern, Daniel Haskel

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

Orientational 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, La_1.6-xSr_xNd_0.4CuO₄, La_1.85Sr_0.15Cu_1-yNi_yO₄, find both displacement and orientational disorder induced by doping (Sr,Ba) and alloying (Nd,Ni) atoms. The displacement disorder is in the first few neighboring atoms to the perturbing atom while the orientational disorder is of nanometer-sized regions which have disordering of the tilt angles of their CuO₆ octahedra with respect to neighboring regions. This disorder affects both the normal and superconducting properties of the materials. It is found that disorder induced in the Cu-O₂ planes has the greatest detrimental effect on T_c and conductivity.

Original language	English
Pages (from-to)	86-101
Number of pages	16
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4811
DOIs	https://doi.org/10.1117/12.455492
State	Published - 2002
Externally published	Yes
Event	Superconducting and Related Oxides: Physics and Nanoengineering V - Seattle, WA, United States Duration: 8 Jul 2002 → 11 Jul 2002

Keywords

Disorder
La BaCuO
LaSrCuNiO
LaSrCuO
LaSrNd CuO
Local structure
Superconductivity
XAFS

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10.1117/12.455492

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@article{49441f069f6345d6afab8c75f35256bd,

title = "Nanostructure in the La2CuO4 based superconductors",

abstract = "Orientational dependent x-ray absorption fine structure (XAFS) measurements on the local structure of the La2CuO4 based high Tc superconductors La2-xSrxCuO4, La2-xBaxCuO4, La1.6-xSrxNd0.4CuO4, La1.85Sr0.15Cu1-yNiyO4, find both displacement and orientational disorder induced by doping (Sr,Ba) and alloying (Nd,Ni) atoms. The displacement disorder is in the first few neighboring atoms to the perturbing atom while the orientational disorder is of nanometer-sized regions which have disordering of the tilt angles of their CuO6 octahedra with respect to neighboring regions. This disorder affects both the normal and superconducting properties of the materials. It is found that disorder induced in the Cu-O2 planes has the greatest detrimental effect on Tc and conductivity.",

keywords = "Disorder, La BaCuO, LaSrCuNiO, LaSrCuO, LaSrNd CuO, Local structure, Superconductivity, XAFS",

author = "Stern, \{Edward A.\} and Daniel Haskel",

year = "2002",

doi = "10.1117/12.455492",

language = "אנגלית",

volume = "4811",

pages = "86--101",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

issn = "0277-786X",

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note = "Superconducting and Related Oxides: Physics and Nanoengineering V ; Conference date: 08-07-2002 Through 11-07-2002",

}

TY - JOUR

T1 - Nanostructure in the La2CuO4 based superconductors

AU - Stern, Edward A.

AU - Haskel, Daniel

PY - 2002

Y1 - 2002

N2 - Orientational dependent x-ray absorption fine structure (XAFS) measurements on the local structure of the La2CuO4 based high Tc superconductors La2-xSrxCuO4, La2-xBaxCuO4, La1.6-xSrxNd0.4CuO4, La1.85Sr0.15Cu1-yNiyO4, find both displacement and orientational disorder induced by doping (Sr,Ba) and alloying (Nd,Ni) atoms. The displacement disorder is in the first few neighboring atoms to the perturbing atom while the orientational disorder is of nanometer-sized regions which have disordering of the tilt angles of their CuO6 octahedra with respect to neighboring regions. This disorder affects both the normal and superconducting properties of the materials. It is found that disorder induced in the Cu-O2 planes has the greatest detrimental effect on Tc and conductivity.

AB - Orientational dependent x-ray absorption fine structure (XAFS) measurements on the local structure of the La2CuO4 based high Tc superconductors La2-xSrxCuO4, La2-xBaxCuO4, La1.6-xSrxNd0.4CuO4, La1.85Sr0.15Cu1-yNiyO4, find both displacement and orientational disorder induced by doping (Sr,Ba) and alloying (Nd,Ni) atoms. The displacement disorder is in the first few neighboring atoms to the perturbing atom while the orientational disorder is of nanometer-sized regions which have disordering of the tilt angles of their CuO6 octahedra with respect to neighboring regions. This disorder affects both the normal and superconducting properties of the materials. It is found that disorder induced in the Cu-O2 planes has the greatest detrimental effect on Tc and conductivity.

KW - Disorder

KW - La BaCuO

KW - LaSrCuNiO

KW - LaSrCuO

KW - LaSrNd CuO

KW - Local structure

KW - Superconductivity

KW - XAFS

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SP - 86

EP - 101

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Superconducting and Related Oxides: Physics and Nanoengineering V

Y2 - 8 July 2002 through 11 July 2002

ER -

Nanostructure in the La₂CuO₄ based superconductors

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Keywords

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