Nature of hole states in cuprate superconductors

Apurva Mehta; Joseph DiCarlo; Alexandra Navrotsky

doi:10.1016/0022-4596(92)90213-F

Nature of hole states in cuprate superconductors

Apurva Mehta, Joseph DiCarlo, Alexandra Navrotsky

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

18 Scopus citations

Abstract

This study addresses the nature of the hole states in the high oxidation state cuprates. From the thermochemistry of oxidation in the cuprate superconductors, specifically inLa_2-xA_xCuO_4-x/2+δ (A =Ba, Sr, Ca, Pb) and YBa₂Cu₃O_6+δ, a model is proposed that assigns a major fraction of the holes in these "Cu³⁺" materials to states which chemically are "peroxidelike," involving holes paired on adjacent oxygens. Based on this hypothesis previously reported structural observations on NaCuO₂, KCuO₂,La_2-xSr_xCuO_4-x/2+δ, and YBa₂Cu₃O_6+δ are modeled. Electrical properties (including superconductivity) of the high oxidation state cuprates are closely related to these structural trends.

Original language	English (US)
Pages (from-to)	173-185
Number of pages	13
Journal	Journal of Solid State Chemistry
Volume	101
Issue number	1
DOIs	https://doi.org/10.1016/0022-4596(92)90213-F
State	Published - Nov 1992
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/0022-4596(92)90213-F

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title = "Nature of hole states in cuprate superconductors",

abstract = "This study addresses the nature of the hole states in the high oxidation state cuprates. From the thermochemistry of oxidation in the cuprate superconductors, specifically inLa2-xAxCuO4-x/2+δ (A =Ba, Sr, Ca, Pb) and YBa2Cu3O6+δ, a model is proposed that assigns a major fraction of the holes in these {"}Cu3+{"} materials to states which chemically are {"}peroxidelike,{"} involving holes paired on adjacent oxygens. Based on this hypothesis previously reported structural observations on NaCuO2, KCuO2,La2-xSrxCuO4-x/2+δ, and YBa2Cu3O6+δ are modeled. Electrical properties (including superconductivity) of the high oxidation state cuprates are closely related to these structural trends.",

author = "Apurva Mehta and Joseph DiCarlo and Alexandra Navrotsky",

note = "Funding Information: We thank J. Bularzik (of Inland Steel), J. Bringley (of Kodak). and B. Scott (of1.B.M.) for fruitful collaboration and discussions. We also thank P. Anderson, R. Bhatt, D. McClure, and S. Shyamsunder of Princeton University for valuable discussions. This work was supported by the Department of Energy (Grant DE-HGO?-89ER45394).",

year = "1992",

month = nov,

doi = "10.1016/0022-4596(92)90213-F",

language = "English (US)",

volume = "101",

pages = "173--185",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

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AU - Mehta, Apurva

AU - DiCarlo, Joseph

AU - Navrotsky, Alexandra

N1 - Funding Information: We thank J. Bularzik (of Inland Steel), J. Bringley (of Kodak). and B. Scott (of1.B.M.) for fruitful collaboration and discussions. We also thank P. Anderson, R. Bhatt, D. McClure, and S. Shyamsunder of Princeton University for valuable discussions. This work was supported by the Department of Energy (Grant DE-HGO?-89ER45394).

PY - 1992/11

Y1 - 1992/11

N2 - This study addresses the nature of the hole states in the high oxidation state cuprates. From the thermochemistry of oxidation in the cuprate superconductors, specifically inLa2-xAxCuO4-x/2+δ (A =Ba, Sr, Ca, Pb) and YBa2Cu3O6+δ, a model is proposed that assigns a major fraction of the holes in these "Cu3+" materials to states which chemically are "peroxidelike," involving holes paired on adjacent oxygens. Based on this hypothesis previously reported structural observations on NaCuO2, KCuO2,La2-xSrxCuO4-x/2+δ, and YBa2Cu3O6+δ are modeled. Electrical properties (including superconductivity) of the high oxidation state cuprates are closely related to these structural trends.

AB - This study addresses the nature of the hole states in the high oxidation state cuprates. From the thermochemistry of oxidation in the cuprate superconductors, specifically inLa2-xAxCuO4-x/2+δ (A =Ba, Sr, Ca, Pb) and YBa2Cu3O6+δ, a model is proposed that assigns a major fraction of the holes in these "Cu3+" materials to states which chemically are "peroxidelike," involving holes paired on adjacent oxygens. Based on this hypothesis previously reported structural observations on NaCuO2, KCuO2,La2-xSrxCuO4-x/2+δ, and YBa2Cu3O6+δ are modeled. Electrical properties (including superconductivity) of the high oxidation state cuprates are closely related to these structural trends.

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Nature of hole states in cuprate superconductors

Abstract

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