Phenomenological single-particle Green's function for the pseudogap and superconducting phases of high-Tc cuprates

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

doi:10.1103/PhysRevResearch.2.023398

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Phenomenological single-particle Green's function for the pseudogap and superconducting phases of high-Tc cuprates

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

DOI 10.1103/PhysRevResearch.2.023398 · Physical Review Research

T1

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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 experiments in the pseudogap phase can be systematically explained as a function of doping, which are 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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8+x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown