Quasiparticles in the Pseudogap Phase of Underdoped Cuprate

Authors :: T. M. Rice
H.-B. Yang
Peter D. Johnson
Fu-Chun Zhang
Kai-Yu Yang
Publication Year :: 2008
Publisher :: arXiv, 2008.
Abstract: Recent angle resolved photoemission \cite{yang-nature-08} and scanning tunneling microscopy \cite{kohsaka-nature-08} measurements on underdoped cuprates have yielded new spectroscopic information on quasiparticles in the pseudogap phase. New features of the normal state such as particle-hole asymmetry, maxima in the energy dispersion and accompanying drops in the spectral weight of quasiparticles agree with the ansatz of Yang \textit{et al.} for the single particle propagator in the pseudogap phase. The coherent quasiparticle dispersion and reduced asymmetry in the tunneling density of states in the superconducting state can also be described by this propagator.<br />Comment: updated version, 6 pages, 7 figures, 1 table, EPL 86 (2009) 37002 (https://www.epletters.net)