We consider the scenario where a 4-lattice constant, rotationally symmetric charge density wave (CDW) is present in the underdoped cuprates. We prove a theorem that puts strong constraint on the possible form factor of such a CDW. We demonstrate, within mean-field theory, that a particular form factor within the allowed class describes the angle-resolved photoemission and scan tunneling spectroscopy well. We conjecture that the ``large pseudogap'' in cuprates is the consequence of this type of charge density wave.
@article{arxiv.cond-mat/0606392,
title = {Checkerboard charge density wave and pseudogap in high-$T_{c}$ cuprates},
author = {Jian-Xin Li and Chang-Qin Wu and Dung-Hai Lee},
journal= {arXiv preprint arXiv:cond-mat/0606392},
year = {2009}
}
Comments
We add a new section II on the symmetry property of the checkerboard CDW