Gang Su*

College of Physical Sciences, Graduate University of Chinese Academy of Sciences, P.O. Box 4588, Beijing 100049, China 6

(Received 5 November 2004; revised manuscript received 31 March 2005; published 21 September 2005)

    It is widely thought that the two-dimensional
2D t-J model captures essential features of the cuprate oxides. However, some recent results on the pairing correlations in this model, which were obtained by various numerical or analytical methods, are controversial. Therefore, whether the 2D t-J model is really suitable for the cuprate oxides is still under debate. We argue that the 2D t-J model may be inadequate for overall describing high temperature superconductivity.

DOI: 10.1103/PhysRevB.72.092510                                                                     PACS number(s): 74.20.Mn, 71.10.Fd