The two-component physics in cuprates in the real space and in the momentum representation

TL;DR

This paper investigates the coexistence of two phases in cuprates, revealing two types of charge carriers and their evolution in real and momentum space, with implications for pseudogap physics.

Contribution

It introduces a comprehensive analysis of two-component physics in cuprates in both real and momentum space, linking experimental data to the pseudogap phenomenon.

Findings

Identification of two charge carrier groups in LSCO.

Thermal activation of bound electron-hole structures near antinodal points.

Revised interpretation of van Hove bands and their relation to pseudogap physics.

Abstract

Gradual evolution of two phase coexistence between dynamical and static regimes in cuprates is first investigated in the real space by making use of the available neutron scattering, NMR and mSR data. Analysis of the Hall effect and the ARPES spectra reveals the presence of two groups of charge carriers in LSCO. The T-dependent component is due to the thermal activation of bound electron-hole structures seen near antinodal points in the Brillouin zone, thus introducing the two-component physics also for the momentum representation. Interpretation of so-called "van Hove bands" undergoes drastic changes. Importance of the findings for pseudo-gap physics is stressed. Relation to some recent STM and STS results is discussed.