Intense AC field driven superlattices with barrier width dimerization

TL;DR

This paper investigates how intense AC fields influence superlattices with alternating barrier widths, providing a framework that bridges high-frequency and low-frequency regimes for coupled mini-bands.

Contribution

It introduces a model that describes the evolution of coupled mini-bands in superlattices under intense AC fields, connecting different frequency regimes.

Findings

Framework for transition between high and low frequency regimes

Analysis of coupled mini-band evolution under AC fields

Bridging analytical models with established low-frequency theories

Abstract

The evolution of two coupled mini-bands, generated by alternating barrier widths dimerization of a superlattice, driven by intense AC fields is investigated. The present model delivers a useful framework for the transition between the analytical high frequency regime and the extreme low frequency limit described by models based on Fukuyama's {\it et al.} (Phys. Rev. B {\bf 8}, 5579 (1973)) proposal.