Polaronic metal in lightly doped high-Tc cuprates

Details Polaronic metal in lightly doped high-Tc cuprates Polaronic metal in lightly doped high-Tc cuprates

2011-09-21

arxiv.org/abs/1109.4502v1

EPL, vol. 95 (2011) 57007

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages, 2 figures

Scientific paper

10.1209/0295-5075/95/57007

We present a combined study of the angle-resolved-photoemission spectroscopy (ARPES) and quantum Monte Carlo simulations to propose a novel polaronic metallic state in underdoped cuprates. An approximation scheme is proposed to represent underdoped cuprates away from 1/2 filling, replacing the many-body Hamiltonian by that of a single polaron with effective electron-phonon interaction (EPI), that successfully explains many puzzles such as a large momentum-dependent dichotomy between nodal and anti-nodal directions, and an unconventional doping dependence of ARPES in the underdoped region.

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