The anomalous metallic ferromagnetic state of Sr doped manganites

TL;DR

This paper proposes a model explaining the anomalous metallic ferromagnetic state in Sr-doped manganites, accounting for experimental observations like vanishing Drude response, pseudogap, and unusual photoemission dispersion.

Contribution

It introduces a theoretical model that explains key experimental anomalies in the low-temperature ferromagnetic phase of Sr-doped manganites.

Findings

Vanishing Drude contribution in optical conductivity

Presence of a pseudogap in the density of states

Unusual dispersion observed in photoemission experiments

Abstract

We deduce a model relevant for the anomalous metallic state of Sr doped manganites at low temperatures within the ferromagnetic phase. It provides a natural explanation to several anomalous features observed experimentally, such as the vanishing Drude contribution in optical conductivity, the pseudo-gap in the density of states, an the unusual dispersion observed in photoemission.