]>Manifestations of the Electron-Phonon Coupling in the Spectroscopy of High-Temperature Superconductors : Figure 1
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Figure 1: Quasiparticle dispersion in the direction ( 0 , 0 ) − ( 𝜋 , 𝜋 ) in the compounds La 2 − 𝑥 Sr 𝑥 CuO 4 (LSCO), Bi 2 Sr 2 CuO 6 (Bi2201), and Bi 2 Sr 2 CaCu 2 O 8 (Bi2212) at different temperatures and dopings. Panel (f) shows the value 1 + 𝜆 , evaluated by the change of the dispersion angle in the weak coupling theory for noninteracting electrons in metal, after Lanzara et al. [64].