Periodically Driven Adiabatic Bipolarons

TL;DR

This paper investigates how external harmonic fields can dynamically stabilize bipolarons in layered cuprates, significantly reducing their effective mass and potentially explaining high-temperature superconductivity.

Contribution

It introduces a model of driven bipolarons in the adiabatic approximation, showing how resonant excitation modulates trapping potential and enhances hole transfer.

Findings

Resonant excitation decreases bipolaron effective mass.

External fields promote hole transfer between layers.

Dynamic stabilization of superconductivity is possible at high temperatures.

Abstract

Small lattice bipolarons driven by external harmonic fields are considered in the adiabatic approximation. Resonant excitation of ions modulates the trapping potential and promotes hole transfer between neighboring atomic layers. It leads to a dramatic decrease of the apparent bipolaron mass compared to the undriven case. This effect offers an explanation for dynamic stabilization of superconductivity at high temperatures recently observed in layered cuprates.