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An Intrinsic Bond-Centered Electronic Glass with Unidirectional Domains in Underdoped Cuprates.

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Title: An Intrinsic Bond-Centered Electronic Glass with Unidirectional Domains in Underdoped Cuprates.
Authors: Kohsaka, Y., Taylor, C., Fujita, K., Schmidt, A., Lupien, C., Hanaguri, T., Azuma, M., Takano, M., Eisaki, H., Takagi, H., Uchida, S., Davis, J. C.
Source: Science (pre-March 2025). 3/9/2007, Vol. 315 Issue 5817, p1380-1385. 6p.
Subjects: Copper oxide, Electrons, Glass, High temperature superconductivity, Electric insulators & insulation, Quantum tunneling, Calcium, Sodium, Bismuth, Dysprosium
Abstract: Removing electrons from the CuO2 plane of cuprates alters the electronic correlations sufficiently to produce high-temperature superconductivity. Associated with these changes are spectral-weight transfers from the high-energy states of the insulator to low energies. In theory, these should be detectable as an imbalance between the tunneling rate for electron injection and extraction—a tunneling asymmetry. We introduce atomic-resolution tunneling-asymmetry imaging, finding virtually identical phenomena in two lightly hole-doped cuprates: Ca1.88Na0.12CuO2Cl2 and Bi2Sr2Dy0.2Ca0.8Cu2O8+δ. Intense spatial variations in tunneling asymmetry occur primarily at the planar oxygen sites; their spatial arrangement forms a Cu-O-Cu bond-centered electronic pattern without long-range order but with 4a0-wide unidirectional electronic domains dispersed throughout (a0: the Cu-O-Cu distance). The emerging picture is then of a partial hole localization within an intrinsic electronic glass evolving, at higher hole densities, into complete delocalization and highest-temperature superconductivity. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science 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
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DbLabel: Psychology and Behavioral Sciences Collection
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PubType: Academic Journal
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  Data: An Intrinsic Bond-Centered Electronic Glass with Unidirectional Domains in Underdoped Cuprates.
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  Data: <searchLink fieldCode="AR" term="%22Kohsaka%2C+Y%2E%22">Kohsaka, Y.</searchLink><br /><searchLink fieldCode="AR" term="%22Taylor%2C+C%2E%22">Taylor, C.</searchLink><br /><searchLink fieldCode="AR" term="%22Fujita%2C+K%2E%22">Fujita, K.</searchLink><br /><searchLink fieldCode="AR" term="%22Schmidt%2C+A%2E%22">Schmidt, A.</searchLink><br /><searchLink fieldCode="AR" term="%22Lupien%2C+C%2E%22">Lupien, C.</searchLink><br /><searchLink fieldCode="AR" term="%22Hanaguri%2C+T%2E%22">Hanaguri, T.</searchLink><br /><searchLink fieldCode="AR" term="%22Azuma%2C+M%2E%22">Azuma, M.</searchLink><br /><searchLink fieldCode="AR" term="%22Takano%2C+M%2E%22">Takano, M.</searchLink><br /><searchLink fieldCode="AR" term="%22Eisaki%2C+H%2E%22">Eisaki, H.</searchLink><br /><searchLink fieldCode="AR" term="%22Takagi%2C+H%2E%22">Takagi, 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>
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 3/9/2007, Vol. 315 Issue 5817, p1380-1385. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Copper+oxide%22">Copper oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Electrons%22">Electrons</searchLink><br /><searchLink fieldCode="DE" term="%22Glass%22">Glass</searchLink><br /><searchLink fieldCode="DE" term="%22High+temperature+superconductivity%22">High temperature superconductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+insulators+%26+insulation%22">Electric insulators & insulation</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+tunneling%22">Quantum tunneling</searchLink><br /><searchLink fieldCode="DE" term="%22Calcium%22">Calcium</searchLink><br /><searchLink fieldCode="DE" term="%22Sodium%22">Sodium</searchLink><br /><searchLink fieldCode="DE" term="%22Bismuth%22">Bismuth</searchLink><br /><searchLink fieldCode="DE" term="%22Dysprosium%22">Dysprosium</searchLink>
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  Data: Removing electrons from the CuO2 plane of cuprates alters the electronic correlations sufficiently to produce high-temperature superconductivity. Associated with these changes are spectral-weight transfers from the high-energy states of the insulator to low energies. In theory, these should be detectable as an imbalance between the tunneling rate for electron injection and extraction—a tunneling asymmetry. We introduce atomic-resolution tunneling-asymmetry imaging, finding virtually identical phenomena in two lightly hole-doped cuprates: Ca1.88Na0.12CuO2Cl2 and Bi2Sr2Dy0.2Ca0.8Cu2O8+δ. Intense spatial variations in tunneling asymmetry occur primarily at the planar oxygen sites; their spatial arrangement forms a Cu-O-Cu bond-centered electronic pattern without long-range order but with 4a0-wide unidirectional electronic domains dispersed throughout (a0: the Cu-O-Cu distance). The emerging picture is then of a partial hole localization within an intrinsic electronic glass evolving, at higher hole densities, into complete delocalization and highest-temperature superconductivity. [ABSTRACT FROM AUTHOR]
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  Label:
  Group: Ab
  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science 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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        Value: 10.1126/science.1138584
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        Text: English
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        PageCount: 6
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        Type: general
      – SubjectFull: Electrons
        Type: general
      – SubjectFull: Glass
        Type: general
      – SubjectFull: High temperature superconductivity
        Type: general
      – SubjectFull: Electric insulators & insulation
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      – SubjectFull: Quantum tunneling
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      – SubjectFull: Calcium
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      – SubjectFull: Sodium
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              Text: 3/9/2007
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