Shubnikov-de Haas effect in low electron density SrTiO3: Conduction band edge of SrTiO3 redux

TL;DR

This paper investigates the conduction band edge of La-doped SrTiO3 using the Shubnikov-de Haas effect, revealing discrepancies with theoretical predictions and confirming previous experimental results.

Contribution

It provides experimental insights into the conduction band structure of SrTiO3, challenging existing ab initio calculations.

Findings

Confirmed earlier measurements of the conduction band edge.

Discovered significant differences from ab initio predictions.

Validated the use of Shubnikov-de Haas effect for band structure analysis.

Abstract

The Shubnikov-de Haas effect is used to explore the conduction band edge of high mobility SrTiO3 films doped with La. The results largely confirm the earlier measurements by Uwe et al. [Jap. J. Appl. Phys. 24, Suppl. 24-2, 335 (1985)]. The band edge dispersion differs significantly from the predictions of ab initio electronic structure theory.