Electron pockets and pseudogap Dirac point in underdoped cuprate superconductors

Autor:	Fisher, K. A. G., Nicol, E. J., Carbotte, J. P.
Rok vydání:	2011
Předmět:	Condensed Matter - Superconductivity Condensed Matter - Strongly Correlated Electrons
Zdroj:	EPL, 95, 47008 (2011)
Druh dokumentu:	Working Paper
DOI:	10.1209/0295-5075/95/47008
Popis:	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. Comment: 6 pages, 5 figures, published in EPL
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1107.5503 Zobrazit plný text záznamu View this record from Arxiv