Abstract
We argue that the collective mode as observed in angle resolved photoemission spectroscopy (ARPES) on a large class of cuprates can be associated with dynamic incommensurate CDW fluctuations present in these materials. This scenario is substantiated by a comparison of calculated spectra with experimental ARPES data where we obtain a mode frequency which decreases towards optimal doping thus strongly supporting the existence of a quantum critical point around this concentration. Moreover we extract the temperature dependence of the associated bosonic spectrum from ARPES data where it turns out that there is a continuous evolution from mode-type behavior below T c to a marginal Fermi liquid structure well above T c.
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Seibold, G., Varlamov, S. Effect of Incommensurate Charge-Density Wave Scattering on the Electronic Structure of High-T c Cuprates. Journal of Superconductivity 15, 387–388 (2002). https://doi.org/10.1023/A:1021030532311
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DOI: https://doi.org/10.1023/A:1021030532311