Condensed Matter Physics, 2016, vol. 19, No. 1, 13701
DOI:10.5488/CMP.19.13701           arXiv:1601.01592

Title: Quasiparticle states driven by a scattering on the preformed electron pairs
  T. Domanski (Institute of Physics, M. Curie-Skłodowska University, 20-031 Lublin, Poland)

We analyze evolution of the single particle excitation spectrum of the underdoped cuprate superconductors near the anti-nodal region, considering temperatures below and and above the phase transition. We inspect the phenomenological self-energy that reproduces the angle-resolved-photoemission-spectroscopy (ARPES) data and we show that above the critical temperature, such procedure implies a transfer of the spectral weight from the Bogoliubov-type quasiparticles towards the in-gap damped states. We also discuss some possible microscopic arguments explaining this process.

Key words: superconducting fluctutations, Bogoliubov quasiparticles, pseudogap
PACS: 74.20.-z, 74.20.Mn, 74.40.+k

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