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A substance that reaches superconductivity, a state in which magnetic fields cannot penetrate, and there is no electrical resistance, is referred to as a superconductor. In 1911, Heike Kamerlingh Onnes of Leiden University, a Dutch physicist, observed a relation between the temperature and the resistance of the element mercury. The mercury sample was then cooled in liquid helium to study the linear dependence of resistance on temperature. It was observed that, as the temperature decreased, the...
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An interesting property of a conductor in static equilibrium is that extra charges on the conductor end up on its outer surface, regardless of where they originate. Consider a hollow metallic conductor with a uniform surface charge density. Since the conductor itself is in electrostatic equilibrium, there should not be any electric field inside the conductor. Now, assume a Gaussian surface enclosing the hollow portion. Applying Gauss's law, the inner surface of the hollow conductor will not...
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Charge ordering in superconducting copper oxides.

Alex Frano1, Santiago Blanco-Canosa2,3, Bernhard Keimer4

  • 1Department of Physics, University of California, San Diego, CA 92093, United States of America.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|December 13, 2019
PubMed
Summary
This summary is machine-generated.

Charge order competes with superconductivity in cuprates. This review surveys charge ordering phenomena, focusing on scattering methods and its relationship with lattice dynamics.

Keywords:
charge ordercuprateshigh-temperature superconductivityx-ray scattering

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Area of Science:

  • Condensed Matter Physics
  • Materials Science

Background:

  • Charge order is a key phenomenon in cuprates, often competing with high-temperature superconductivity.
  • Understanding charge order is crucial for advancing superconductor research.

Purpose of the Study:

  • To provide a comprehensive survey of charge order in cuprates.
  • To highlight the role of scattering methods in studying this phenomenon.
  • To discuss its interplay with superconductivity and lattice dynamics.

Main Methods:

  • Scattering methods (e.g., X-ray, neutron scattering) are emphasized.
  • Analysis of experimental results on charge order structure, periodicity, and stability.
  • Investigation of charge order response to perturbations and disorder.

Main Results:

  • Charge order exhibits universal and material-specific characteristics.
  • Its stability, periodicity, and response to external factors are detailed.
  • Coexistence and competition with superconductivity are examined, alongside collective charge dynamics.

Conclusions:

  • Charge order significantly impacts superconductivity in cuprates.
  • Further research using advanced techniques and materials is promising.
  • The connection between charge ordering, lattice vibrations, and central-peak phenomena is explored.