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We study the reconfiguration of the angular resolved photoemission spectrum near M point which occurs in Bi 2Sr 2CaCu 2O 8 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. Copyright Springer-Verlag Berlin/Heidelberg 2003

the european physical journal. b, condensed matter physics/european physical journal. b, condensed matter and complex systems

The ?quasiparticle? peak in the angular resolved spectrum of the superconducting underdoped Bi $\mathsf{_2}$ Sr $\mathsf{_2}$ CaCu $\mathsf{_2}$ O $\mathsf{_8}$