Topological Signatures in Quantum Transport in Anomalous Floquet-Anderson Insulators

TL;DR

This paper investigates the unique topological phase in anomalous Floquet-Anderson insulators, where topological states coexist with localized bulk states, analyzing their transport properties under various conditions.

Contribution

It reveals how topological signatures manifest in transport behaviors of Floquet systems with localized bulk states, a novel phenomenon in driven disordered systems.

Findings

Topological signatures depend on disorder strength and geometry.

Transport properties reveal the presence of topological states.

Behavior varies with different driving protocols.

Abstract

Topological states require the presence of extended bulk states, as usually found in the picture of energy bands and topological states bridging the bulk gaps. But in driven systems this can be circumvented, and one can get topological states coexisting with fully localized bulk states, as in the case of the anomalous Floquet-Anderson insulator. Here, we show the fingerprints of this peculiar topological phase in the transport properties and their dependence on the disorder strength, geometrical configuration (two-terminal and multiterminal setups) and details of the driving protocol.