Exact Diagonalization Studies of Quasiparticles in Doped Quantum Antiferromagnets
Due to their relevance for superconducting copper oxides1, models for strongly correlated systems have been studied extensively in last two years. In spite of a number of analytical approaches applied to these models, and to models of the CuO 2 layers in particular, some of the crucial questions lack even a qualitative answer. In such a situation exact diagonalization studies of small correlated systems have proven to be very valuable. Employing this method several groups obtained important results on various models2–10, representing the insulating state and the low doping regime in CuO 2 layers.
KeywordsExact Diagonalization Density Correlation Lanczos Method Single Hole Superconducting Copper Oxides1
Unable to display preview. Download preview PDF.
- 1.For an overview see e.g. Proc. of Int. Conf. on High - Temperature Superconductivity, Interlaken. J. Müller and J. L. Olsen, Physica C 153–155 (1988);Google Scholar
- Proc. of Int. Conf. on High - Temperature Superconductivity, Proc. of Int. Conf. on High - Temperature Superconductivity, Stanford 1989.Google Scholar
- 6.E. Dagotto, A. Moreo, R. Joynt, S. Bacci and R. Gagliano, preprint; K. J. Szczepanski, P. Horsch, W. Stephan and M. Ziegler, preprint.Google Scholar
- 8.I. Sega and P. Prelovšek, to be published.Google Scholar
- 9.see A. Parola, in this volume.Google Scholar
- 12.P. Prelovšek, Phys. Lett. A 126, 287 (1988);Google Scholar
- 15.Y. Endoh., Phys. Rev. B 37, 7443 (1988);Google Scholar
- Birgeneau R.J., Phys. Rev. B 38, 6614 (1988).Google Scholar
- 16.for a recent review see T. M. Rice, Proc. of 9th Gen. Conf. of Condensed Matter Division of EPS, Nice, 1989.Google Scholar
- 20.G. A. Thomas., Phys. Rev. Lett. 61, 1313 (1988).Google Scholar