The Resonating Valence Bond State in La2CuO4 and Superconductivity

@article{Anderson1987TheRV,
  title={The Resonating Valence Bond State in La2CuO4 and Superconductivity},
  author={Philip W. Anderson},
  journal={Science},
  year={1987},
  volume={235},
  pages={1196 - 1198}
}
The oxide superconductors, particularly those recently discovered that are based on La2CuO4, 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… 

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