Abstract
We discuss the temperature-concentration phase diagram of doped La2CuO4. The addition of holes introduces a local ferromagnetic exchange coupling between Cu spins. The resulting frustration destroys the 3D Néel state characterizing pure La2CuO4, and generates a new 3D spin-glass phase. In the paramagnetic phase, strongly correlated Cu spins in the planes are canted by the holes, yielding an oscillating dipole-dipole attraction between holes. The possible relevance to superconductivity is discussed.
Original language | English |
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Pages (from-to) | 1330-1333 |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 60 |
Issue number | 13 |
DOIs | |
State | Published - 1988 |