The Resonating Valence Bond State in La <sub>2</sub> CuO <sub>4</sub> and Superconductivity

DOI Web Site 被引用文献387件
  • P. W. Anderson
    Department of Physics, Princeton University, Princeton, NJ 08544.

書誌事項

公開日
1987-03-06
DOI
  • 10.1126/science.235.4793.1196
公開者
American Association for the Advancement of Science (AAAS)

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説明

<jats:p> The oxide superconductors, particularly those recently discovered that are based on La <jats:sub>2</jats:sub> CuO <jats:sub>4</jats:sub> , have a set of peculiarities that suggest a common, unique mechanism: they tend in every case to occur near a metal-insulator transition into an odd-electron insulator with peculiar magnetic properties. This insulating phase is proposed to be the long-sought "resonating-valence-bond" state or "quantum spin liquid" hypothesized in 1973. This insulating magnetic phase is favored by low spin, low dimensionality, and magnetic frustration. The preexisting magnetic singlet pairs of the insulating state become charged superconducting pairs when the insulator is doped sufficiently strongly. The mechanism for superconductivity is hence predominantly electronic and magnetic, although weak phonon interactions may favor the state. Many unusual properties are predicted, especially of the insulating state. </jats:p>

収録刊行物

  • Science

    Science 235 (4793), 1196-1198, 1987-03-06

    American Association for the Advancement of Science (AAAS)

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