We discuss the spiral spin density wave model and its application to explain properties of underdoped La2−xSrxCuO4. We argue that the spiral picture is theoretically well justified in the context of the extended t−J model, and then show that it can explain a number of observed features, such as the location and symmetry of the incommensurate peaks in elastic neutron scattering, as well as the in-plane resistivity anisotropy. A consistent description of the low doping region (below 10% or so) emerges from the spiral formulation, in which the holes show no tendency towards any type of charge order and the physics is purely spin driven.
@article{arxiv.cond-mat/0510416,
title = {Spiral Spin Order and Transport Anisotropy in Underdoped Cuprates},
author = {Valeri N. Kotov and Oleg P. Sushkov},
journal= {arXiv preprint arXiv:cond-mat/0510416},
year = {2007}
}
Comments
6 pages, 3 figures; Proceedings of the International Workshop on Effective Models for Low-Dimensional Strongly Correlated Systems, September 2005, Peyresq, France