Electron pockets and pseudogap Dirac point in underdoped cuprate superconductors
Abstract
We consider a model of the pseudogap specifically designed to describe the underdoped cuprates and which exhibits particle-hole asymmetry. The presence of electron pockets, besides the usual hole pockets, leads to the appearance of new vectors beyond the usual so-called octet model in the joint density of states (JDOS), which underlies the analysis of Fourier-transform scanning tunneling spectroscopy (FT-STS) data. These new vectors are associated with distinct patterns of large amplitude in the JDOS and are expected to occur primarily at positive bias. Likewise a pseudogap Dirac point occurs at positive bias and this point can be determined either through FT-STS or through extrapolation of data from the autocorrelation function of angle-resolved photoemission spectroscopy.
Cite
@article{arxiv.1107.5503,
title = {Electron pockets and pseudogap Dirac point in underdoped cuprate superconductors},
author = {K. A. G. Fisher and E. J. Nicol and J. P. Carbotte},
journal= {arXiv preprint arXiv:1107.5503},
year = {2015}
}
Comments
6 pages, 5 figures, published in EPL