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Related Concept Videos

Metallic Solids02:37

Metallic Solids

Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
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Color in Coordination Complexes
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Superconductor01:24

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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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Radio Frequency Magnetron Sputtering of GdBa2Cu3O7−δ/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 (STO) Single-crystal Substrates
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Local magnetic order vs superconductivity in a layered cuprate

Ichikawa1, Uchida, Tranquada

  • 1Department of Superconductivity, School of Engineering, University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656, Japan.

Physical Review Letters
|September 6, 2000
PubMed
Summary

The study reveals a direct link between charge-stripe order and superconductivity in La1.6-xNd0.4SrxCuO4. Decreasing charge ordering temperatures correlate with suppressed superconductivity, supporting theories of stripe-driven superconductivity.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Solid State Chemistry

Background:

  • La1.6-xNd0.4SrxCuO4 exhibits complex phase diagrams with competing charge-stripe order and superconductivity.
  • The anomalous suppression of superconductivity near x = 1/8 is a key phenomenon requiring explanation.

Purpose of the Study:

  • To elucidate the phase diagram of charge-stripe order in La1.6-xNd0.4SrxCuO4.
  • To investigate the relationship between charge-stripe order and the depression of superconductivity.

Main Methods:

  • Neutron scattering studies
  • X-ray scattering studies
  • Resistivity measurements
  • Analysis of in-plane resistivity
  • Nuclear-quadrupole-resonance (NQR) studies

Main Results:

  • The transition temperature for local charge ordering decreases monotonically with increasing strontium content (x).
  • Local antiferromagnetic order is uniquely correlated with the anomalous depression of superconductivity at x ≈ 1/8.
  • Charge-stripe order is established as a critical factor influencing superconducting properties.

Conclusions:

  • The findings support theoretical models where superconductivity is intrinsically linked to charge-stripe correlations.
  • Understanding charge-stripe order is crucial for comprehending the behavior of cuprate superconductors.
  • This work provides a detailed phase diagram for charge-stripe order, aiding future research in related materials.