Kinks and waterfalls as signatures of competing order in angle-resolved photoemission spectra of La_{2-x}Sr_xCuO_4

Abstract

We show that the so-called kinks and waterfalls observed in angle-resolved photoemission spectra of La2-xSrxCuO4, a prototypical high-Tc superconducting cuprate, result from the coupling of quasiparticles with two distinct nearly critical collective modes with finite characteristic wave vectors, typical of charge and spin fluctuations near a stripe instability. Both phonon-like charge and spin collective modes are needed to account for the kinked quasiparticle dispersions. This clarifies the long-standing question whether kinks are due to phonons or spin waves and the nature of the bosonic mediators of the electron-electron effective interaction in La2-xSrxCuO4.

5 pages, 4 figures

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Cited by in corpus (9)

• Charge-density-wave order with momentum $(2Q,0)$ and $(0,2Q)$ within the spin-fermion model: continuous and discrete symmetry breaking, preemptive composite order, and relation to pseudogap in hole-doped cuprates
• Phase diagrams of voltage-gated oxide interfaces with strong Rashba coupling
• Polar Kerr effect from chiral-nematic charge order
• Spin-fermion model with overlapping hot spots and charge modulation in cuprates
• Signatures of nematic quantum critical fluctuations in the Raman spectra of lightly doped cuprates
• Local correlations necessitate waterfalls as a connection between quasiparticle band and developing Hubbard bands
• Glue function of optimally and overdoped cuprates from inversion of the Raman spectra
• Effect of short-range correlations on spectral properties of doped Mott insulators
• Role of the upper branch of the hour-glass magnetic spectrum in the formation of the main kink in the electronic dispersion of high-T${}_{\text{c}}$ cuprate superconductors