Magnetic frustration model and superconductivity in doped planar CuO2 systems

Ammon Aharony*, Robert J. Birgeneau, Marc A. Kastner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We present a model for the magnetic phases and superconductivity in doped planar CuO2 systems. Electronic holes on the oxygen ions introduce local ferromagnetic exchange couplings between the Cu spins. The resulting frustration destroys the antiferromagnetic state characterizing the undoped planes, and generates a new spin-glass phase. This frustration also yields an attractive interaction between the holes, whose range decreases with increasing doping. We use the BCS approximation to obtain an estimate of the superconducting transition temperature Tc(x) for La2-xSrxCuO4.

Original languageEnglish
Pages (from-to)287-292
Number of pages6
JournalIBM Journal of Research and Development
Volume33
Issue number3
DOIs
StatePublished - 1989

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