Competition between the pseudogap and superconductivity in the high-Tc copper oxides.
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| Title: | Competition between the pseudogap and superconductivity in the high-T |
|---|---|
| Authors: | Kondo, Takeshi, Khasanov, Rustem, Takeuchi, Tsunehiro, Schmalian, Jörg, Kaminski, Adam |
| Source: | Nature. 1/15/2009, Vol. 457 Issue 7227, p296-300. 5p. 1 Diagram, 3 Graphs. |
| Subjects: | Superconductivity, Copper oxide superconductors, Transition temperature, Research methodology, Emission spectroscopy, Photoemission, Electrons |
| Abstract: | In a classical Bardeen–Cooper–Schrieffer superconductor, pairing and coherence of electrons are established simultaneously below the critical transition temperature (Tc), giving rise to a gap in the electronic energy spectrum. In the high-Tc copper oxide superconductors, however, a pseudogap extends above Tc. The relationship between the pseudogap and superconductivity is one of the central issues in this field. Spectral gaps arising from pairing precursors are qualitatively similar to those caused by competing electronic states, rendering a standard approach to their analysis inconclusive. The issue can be settled, however, by studying the correlation between the weights associated with the pseudogap and superconductivity spectral features. Here we report a study of two spectral weights using angle-resolved photoemission spectroscopy. The weight of the superconducting coherent peak increases away from the node following the trend of the superconducting gap, but starts to decrease in the antinodal region. This striking non-monotonicity reveals the presence of a competing state. We demonstrate a direct correlation, for different values of momenta and doping, between the loss in the low-energy spectral weight arising from the opening of the pseudogap and a decrease in the spectral weight associated with superconductivity. We therefore conclude that the pseudogap competes with the superconductivity by depleting the spectral weight available for pairing. [ABSTRACT FROM AUTHOR] |
| Copyright of Nature is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: pbh DbLabel: Psychology and Behavioral Sciences Collection An: 36113264 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Competition between the pseudogap and superconductivity in the high-T<subscript>c</subscript> copper oxides. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Kondo%2C+Takeshi%22">Kondo, Takeshi</searchLink><br /><searchLink fieldCode="AR" term="%22Khasanov%2C+Rustem%22">Khasanov, Rustem</searchLink><br /><searchLink fieldCode="AR" term="%22Takeuchi%2C+Tsunehiro%22">Takeuchi, Tsunehiro</searchLink><br /><searchLink fieldCode="AR" term="%22Schmalian%2C+Jörg%22">Schmalian, Jörg</searchLink><br /><searchLink fieldCode="AR" term="%22Kaminski%2C+Adam%22">Kaminski, Adam</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nature%22">Nature</searchLink>. 1/15/2009, Vol. 457 Issue 7227, p296-300. 5p. 1 Diagram, 3 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Superconductivity%22">Superconductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Copper+oxide+superconductors%22">Copper oxide superconductors</searchLink><br /><searchLink fieldCode="DE" term="%22Transition+temperature%22">Transition temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Research+methodology%22">Research methodology</searchLink><br /><searchLink fieldCode="DE" term="%22Emission+spectroscopy%22">Emission spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Photoemission%22">Photoemission</searchLink><br /><searchLink fieldCode="DE" term="%22Electrons%22">Electrons</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In a classical Bardeen–Cooper–Schrieffer superconductor, pairing and coherence of electrons are established simultaneously below the critical transition temperature (Tc), giving rise to a gap in the electronic energy spectrum. In the high-Tc copper oxide superconductors, however, a pseudogap extends above Tc. The relationship between the pseudogap and superconductivity is one of the central issues in this field. Spectral gaps arising from pairing precursors are qualitatively similar to those caused by competing electronic states, rendering a standard approach to their analysis inconclusive. The issue can be settled, however, by studying the correlation between the weights associated with the pseudogap and superconductivity spectral features. Here we report a study of two spectral weights using angle-resolved photoemission spectroscopy. The weight of the superconducting coherent peak increases away from the node following the trend of the superconducting gap, but starts to decrease in the antinodal region. This striking non-monotonicity reveals the presence of a competing state. We demonstrate a direct correlation, for different values of momenta and doping, between the loss in the low-energy spectral weight arising from the opening of the pseudogap and a decrease in the spectral weight associated with superconductivity. We therefore conclude that the pseudogap competes with the superconductivity by depleting the spectral weight available for pairing. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Nature is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1038/nature07644 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 5 StartPage: 296 Subjects: – SubjectFull: Superconductivity Type: general – SubjectFull: Copper oxide superconductors Type: general – SubjectFull: Transition temperature Type: general – SubjectFull: Research methodology Type: general – SubjectFull: Emission spectroscopy Type: general – SubjectFull: Photoemission Type: general – SubjectFull: Electrons Type: general Titles: – TitleFull: Competition between the pseudogap and superconductivity in the high-Tc copper oxides. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Kondo, Takeshi – PersonEntity: Name: NameFull: Khasanov, Rustem – PersonEntity: Name: NameFull: Takeuchi, Tsunehiro – PersonEntity: Name: NameFull: Schmalian, Jörg – PersonEntity: Name: NameFull: Kaminski, Adam IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 01 Text: 1/15/2009 Type: published Y: 2009 Identifiers: – Type: issn-print Value: 00280836 Numbering: – Type: volume Value: 457 – Type: issue Value: 7227 Titles: – TitleFull: Nature Type: main |
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