Issue |
EPJ Web of Conferences
Volume 23, 2012
Eurasia-Pacific Summer School & Conference on Correlated Electrons
|
|
---|---|---|
Article Number | 00008 | |
Number of page(s) | 1 | |
DOI | https://doi.org/10.1051/epjconf/20122300008 | |
Published online | 07 March 2012 |
https://doi.org/10.1051/epjconf/20122300008
Dynamically induced Fermi arcs and pockets: A model for the pseudogap in underdoped cupratesa
Department of Physics, SungKyunKwan University, Suwon 440-746, Korea
We investigate the effects of the dynamic bosonic fluctuations on the Fermi surface reconstruction in two dimensions as a model for the pseudogap in underdoped cuprates. At energies larger than the boson energy ωb the dynamic nature of the fluctuations is not important and the quasi-particle dispersion exhibits the shadow feature like that induced by a static long range order. At lower energies, however, the shadow feature is pushed away by the finite ωb. The detailed low energy features are determined by the bare dispersion and the coupling of quasi-particles to the dynamic fluctuations. We present how these factors truncate the Fermi surface to produce the Fermi arcs or the Fermi pockets, or their coexistence. Our principal result is that the dynamic nature of the fluctuations, without invoking a yet-to-be-established translational symmetry breaking hidden order, can produce the Fermi arc or Fermi pocket centered away from the (π/2, π/2) towards the zone center. This is discussed in comparison with the experimental observations.
The presentation slides are available at the website http://www.its.caltech.edu/~yehgroup/documents/ITAP2011_Conference_Choi.pdf
© Owned by the authors, published by EDP Sciences, 2012
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.