Structural transition in LaVO3/SrVO3 superlattices and its influence on transport properties

TL;DR

This study investigates how a structural transition from monoclinic to tetragonal in LaVO3/SrVO3 superlattices affects their electrical transport, revealing a low-temperature Fermi liquid phase that is disrupted near the transition.

Contribution

It provides new insights into the relationship between structural phases and electronic transport in complex oxide superlattices.

Findings

Identification of a low-temperature metallic Fermi liquid phase

Disruption of metallic behavior near the monoclinic-tetragonal transition

Structural disorder influences transport properties

Abstract

Measurements of the resistive properties and the lattice parameters of a (LaVO3)[6 unit cells]/(SrVO3)[1 unit cell] superlattice between 10K and room temperature are presented. A low temperature metallic phase compatible with a Fermi liquid behavior is evidenced. It disappears in the vicinity of a structural transition from a monoclinic to tetragonal phase, in which disorder seems to strongly influence the transport. Our results will enrich the understanding of the electronic properties of complex heterostructures.