Stripes, Electron-Like and Polaron-Like Carriers, and High-T_c in the Cuprates

TL;DR

This paper explores the complex electronic structure of high-T_c cuprates, proposing a model with three types of carriers and linking their interactions to superconductivity and anomalous physical properties.

Contribution

It introduces a novel three-carrier model involving stripons, quasielectrons, and svivons, explaining high-T_c phenomena through their interactions and transitions.

Findings

Identification of three carrier types in cuprates

Explanation of resistivity, Hall constant, and thermoelectric power behaviors

Linking carrier interactions to high-temperature superconductivity

Abstract

Both "large-U" and "small-U" orbitals are used to study the electronic structure of the high-T_c cuprates. A striped structure with three types of carriers are induced, polaron-like "stripons" which carry charge, "quasielectrons" which carry both charge and spin, and "svivons" which carry spin and lattice distortion. Anomalous physical properties of the cuprates are derived, and specifically the systematic behavior of the resistivity, Hall constant, and thermoelectric power. Transitions between pair states of quasielectrons and stripons drive high-temperature superconductivity.