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Applying the Kramers-Kronig consistent procedure, developed earlier, weinvestigate in details the formation of the quasiparticle spectrum along thenodal direction of high-Tc cuprates. The heavily discussed "70 meV kink" on therenormalized dispersion exhibits a strong temperature and doping dependencewhen purified from structural effects. This dependence is well understood interms of fermionic and bosonic constituents of the self-energy. The latterfollows the evolution of the spin-fluctuation spectrum, emerging below T* andsharpening below Tc, and is the main responsible for the formation of the kinkin question.Comment: revte

physical review letters

Constituents of the Quasiparticle Spectrum Along the Nodal Direction of High-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>T</mml:mi><mml:mi>c</mml:mi></mml:msub></mml:math>Cuprates

Constituents of the Quasiparticle Spectrum Along the Nodal Direction of High-TcCuprates