Relating atomic-scale electronic phenomena to wave-like quasiparticle states in superconducting Bi2Sr2CaCu2O8+d.
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| Title: | Relating atomic-scale electronic phenomena to wave-like quasiparticle states in superconducting Bi |
|---|---|
| Authors: | McElroy, K., Simmonds, R. W., Hoffman, J. E., Lee, D.-H., Orenstein, J., Eisaki, H., Uchida, S., Davis, J. C. |
| Source: | Nature. 4/10/2003, Vol. 422 Issue 6932, p592. 5p. |
| Subjects: | Superconductors, Quantum theory, Fourier transforms |
| Abstract: | The electronic structure of simple crystalline solids can be completely described in terms either of local quantum states in real space (r-space), or of wave-like states defined in momentum-space (k-space). However, in the copper oxide superconductors, neither of these descriptions alone may be sufficient. Indeed, comparisons between r-space and k-space studies of Bi2Sr2CaCu2O8+d (Bi-2212) reveal numerous unexplained phenomena and apparent contradictions. Here, to explore these issues, we report Fourier transform studies of atomic-scale spatial modulations in the Bi-2212 density of states. When analysed as arising from quasiparticle interference, the modulations yield elements of the Fermi-surface and energy gap in agreement with photoemission experiments. The consistency of numerous sets of dispersing modulations with the quasiparticle interference model shows that no additional order parameter is required. We also explore the momentum-space structure of the unoccupied states that are inaccessible to photoemission, and find strong similarities to the structure of the occupied states. The copper oxide quasiparticles therefore apparently exhibit particle-hole mixing similar to that of conventional superconductors. Near the energy gap maximum, the modulations become intense, commensurate with the crystal, and bounded by nanometre-scale domains. Scattering of the antinodal quasiparticles is therefore strongly influenced by nanometre-scale disorder. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Items | – Name: Title Label: Title Group: Ti Data: Relating atomic-scale electronic phenomena to wave-like quasiparticle states in superconducting Bi<subscript>2</subscript>Sr<subscript>2</subscript>CaCu<subscript>2</subscript>O<subscript>8+d</subscript>. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22McElroy%2C+K%2E%22">McElroy, K.</searchLink><br /><searchLink fieldCode="AR" term="%22Simmonds%2C+R%2E+W%2E%22">Simmonds, R. W.</searchLink><br /><searchLink fieldCode="AR" term="%22Hoffman%2C+J%2E+E%2E%22">Hoffman, J. E.</searchLink><br /><searchLink fieldCode="AR" term="%22Lee%2C+D%2E-H%2E%22">Lee, D.-H.</searchLink><br /><searchLink fieldCode="AR" term="%22Orenstein%2C+J%2E%22">Orenstein, J.</searchLink><br /><searchLink fieldCode="AR" term="%22Eisaki%2C+H%2E%22">Eisaki, H.</searchLink><br /><searchLink fieldCode="AR" term="%22Uchida%2C+S%2E%22">Uchida, S.</searchLink><br /><searchLink fieldCode="AR" term="%22Davis%2C+J%2E+C%2E%22">Davis, J. C.</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nature%22">Nature</searchLink>. 4/10/2003, Vol. 422 Issue 6932, p592. 5p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Superconductors%22">Superconductors</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+theory%22">Quantum theory</searchLink><br /><searchLink fieldCode="DE" term="%22Fourier+transforms%22">Fourier transforms</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The electronic structure of simple crystalline solids can be completely described in terms either of local quantum states in real space (r-space), or of wave-like states defined in momentum-space (k-space). However, in the copper oxide superconductors, neither of these descriptions alone may be sufficient. Indeed, comparisons between r-space and k-space studies of Bi2Sr2CaCu2O8+d (Bi-2212) reveal numerous unexplained phenomena and apparent contradictions. Here, to explore these issues, we report Fourier transform studies of atomic-scale spatial modulations in the Bi-2212 density of states. When analysed as arising from quasiparticle interference, the modulations yield elements of the Fermi-surface and energy gap in agreement with photoemission experiments. The consistency of numerous sets of dispersing modulations with the quasiparticle interference model shows that no additional order parameter is required. We also explore the momentum-space structure of the unoccupied states that are inaccessible to photoemission, and find strong similarities to the structure of the occupied states. The copper oxide quasiparticles therefore apparently exhibit particle-hole mixing similar to that of conventional superconductors. Near the energy gap maximum, the modulations become intense, commensurate with the crystal, and bounded by nanometre-scale domains. Scattering of the antinodal quasiparticles is therefore strongly influenced by nanometre-scale disorder. [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/nature01496 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 5 StartPage: 592 Subjects: – SubjectFull: Superconductors Type: general – SubjectFull: Quantum theory Type: general – SubjectFull: Fourier transforms Type: general Titles: – TitleFull: Relating atomic-scale electronic phenomena to wave-like quasiparticle states in superconducting Bi2Sr2CaCu2O8+d. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: McElroy, K. – PersonEntity: Name: NameFull: Simmonds, R. W. – PersonEntity: Name: NameFull: Hoffman, J. E. – PersonEntity: Name: NameFull: Lee, D.-H. – PersonEntity: Name: NameFull: Orenstein, J. – PersonEntity: Name: NameFull: Eisaki, H. – PersonEntity: Name: NameFull: Uchida, S. – PersonEntity: Name: NameFull: Davis, J. C. IsPartOfRelationships: – BibEntity: Dates: – D: 10 M: 04 Text: 4/10/2003 Type: published Y: 2003 Identifiers: – Type: issn-print Value: 00280836 Numbering: – Type: volume Value: 422 – Type: issue Value: 6932 Titles: – TitleFull: Nature Type: main |
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