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arXiv · 1905.04862

Phenomenological Single-Particle Green's Function for the Pseudogap and Superconducting Phases of High-T$_c$ Cuprates

Jian-Hao Zhang·Sen Li·Yao Ma·Yigui Zhong·Hong Ding·Zheng-Yu Weng
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Abstract

We present a phenomenological Green's function to characterize the superconducting and pseudogap phases of the cuprates based on a microscopic theory of doped Mott insulators. In this framework, the "Fermi arc" and "kink" phenomena observed by angle-resolved photoemission spectroscopy (ARPES) experiments in the pseudogap phase can be systematically explained as a function of doping, which is further connected to the two-gap feature in the superconducting phase with dichotomy between the nodal and antinodal physics. We demonstrate that a phase-string-induced fractionalization plays the key role in giving rise to such a peculiar Green's function with a unique two-component structure.

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Jian-Hao Zhang, Sen Li, Yao Ma, Yigui Zhong, Hong Ding, Zheng-Yu Weng. 2019-11-28. Phenomenological Single-Particle Green's Function for the Pseudogap and Superconducting Phases of High-T$_c$ Cuprates. https://doi.org/10.1103/physrevresearch.2.023398

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