Manifestations of the electron-phonon interaction range in angle-resolved photoemission spectra

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Abstract
Numerous angle-resolved photoemission spectroscopy (ARPES) studies of a wide class of low-density metallic systems, ranging from doped transition metal oxides to quasi-two-dimensional interfaces between insulators, exhibit phonon sidebands below the quasiparticle peak as a unique hallmark of polaronic correlations. Here, we single out properties of ARPES spectra that can provide a robust estimate of the effective range (screening length) of the electron-phonon interaction, regardless of the limited experimental resolution, dimensionality, and particular features of the electronic structure, facilitating a general methodology for an analysis of a whole class of materials.
Funding Information
  • Japan Science and Technology Agency
  • Core Research for Evolutional Science and Technology (JPMJCR1874)
  • Hrvatska Zaklada za Znanost (IP-2016-06-7258)
  • European Commission
  • European Regional Development Fund (KK.01.1.1.01.0004)

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