Abstract.
We study the reconfiguration of the angular resolved photoemission spectrum near M point which occurs in Bi2Sr2CaCu2O8 upon cooling below the superconducting transition temperature. Restricting our attention to the case of underdoped samples we offer a phenomenological mechanism-independent explanation for this effect. It is demonstrated that under certain circumstances the emergence of a peak can be linked to the normal state pseudogap. All of the basic experimental observations, including weak peak dispersion, “dip-and-hump” shape of the superconducting state spectrum and appearance of the peak at the temperatures somewhat higher than the critical temperature, are naturally explained.
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Received: 25 December 2002, Published online: 22 September 2003
PACS:
74.20.Mn Nonconventional mechanisms (spin fluctuations, polarons and bipolarons, resonating valence bond model, anion mechanism, marginal Fermi liquid, Luttinger liquid, etc.) - 74.25.Jb Electronic structure
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Rozhkov, A.V. The “quasiparticle” peak in the angular resolved spectrum of the superconducting underdoped Bi\(\mathsf{_2}\) Sr\(\mathsf{_2}\) CaCu\(\mathsf{_2}\) O\(\mathsf{_8}\) . Eur. Phys. J. B 35, 103–110 (2003). https://doi.org/10.1140/epjb/e2003-00260-x
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DOI: https://doi.org/10.1140/epjb/e2003-00260-x