A mean field t-J model for high Tc superconductivity containing two kinds of point defects

J. W. Halley, S. Davis, S. Sen

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


We describe studies of the effects of point defects on a t-J model of high Tc superconductors. One kind of point defect is associated with an enhanced value of J at certain randomly selected sites. The other kind of defect is associated with random values of the on site energy in the one-electron part of the model, as in the Anderson model of localization. We present a qualitative argument to the effect that such a model might account for the anomalous sensitivity of high Tc superconductors to nonmagnetic impurities in the copper oxide planes. We present numerical mean field calculations on the model in which disorder due to point defects is treated explicitly. A strong dependence of Tc on the Anderson parameter W is observed.

Original languageEnglish (US)
Pages (from-to)999-1000
Number of pages2
JournalPhysica B: Condensed Matter
StatePublished - Jan 1 1990

Fingerprint Dive into the research topics of 'A mean field t-J model for high T<sub>c</sub> superconductivity containing two kinds of point defects'. Together they form a unique fingerprint.

Cite this