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arXiv · 1109.4502

Polaronic metal in lightly doped high-Tc cuprates

A. S. Mishchenko·N. Nagaosa·K. M. Shen·Z. -X. Shen·X. J. Zhou·T. P. Devereaux
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Abstract

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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A. S. Mishchenko, N. Nagaosa, K. M. Shen, Z. -X. Shen, X. J. Zhou, T. P. Devereaux. 2011-09-21. Polaronic metal in lightly doped high-Tc cuprates. https://doi.org/10.1209/0295-5075%2F95%2F57007

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