Magnetism and electronic structure of ($001$)- and ($111$)-oriented LaTiO$_3$ bilayers sandwiched in LaScO$_3$ barriers

Yakui Weng; Shuai Dong

doi:10.1063/1.4913637

paper

Magnetism and electronic structure of ( $001$ )- and ( $111$ )-oriented LaTiO $_{3}$ bilayers sandwiched in LaScO $_{3}$ barriers

arXiv:1410.7492 · doi:10.1063/1.4913637

Abstract

In this study, the magnetism and electronic structure of LaTiO $_{3}$ bilayers along both the ( $001$ ) and ( $111$ ) orientations are calculated using the density functional theory. The band insulator LaScO $_{3}$ is chosen as the barrier layer and substrate to obtain the isolating LaTiO $_{3}$ bilayer. For both the ( $001$ )- and ( $111$ )-oriented cases, LaTiO $_{3}$ demonstrates the G-type antiferromagnetism as the ground state, similar to the bulk material. However, the electronic structure is significantly changed. The occupied bands of Ti are much narrower in the ( $111$ ) case, giving a nearly flat band. As a result, the exchange coupling between nearest-neighbor Ti ions are reformed in these superlattices, which will affect the Néel temperature significantly.

arXiv comment4 pages, 4 figures. The 59th Annual Magnetism and Magnetic Materials (MMM) Conference

Magnetism and electronic structure of ( $001$ )- and ( $111$ )-oriented LaTiO $_{3}$ bilayers sandwiched in LaScO $_{3}$ barriers

Abstract

References in corpus (21)

Cited by in corpus (3)

Magnetism and electronic structure of (001)- and (111)-oriented LaTiO3​ bilayers sandwiched in LaScO3​ barriers

Abstract

References in corpus (21)

Cited by in corpus (3)

Magnetism and electronic structure of ( $001$ )- and ( $111$ )-oriented LaTiO $_{3}$ bilayers sandwiched in LaScO $_{3}$ barriers