Charge transfer and hybrid ferroelectricity in (YFeO$_{3}$)$_{n}$/(YTiO$_{3}$)$_{n}$ magnetic superlattices

Huimin Zhang; Yakui Weng; Xiaoyan Yao; Shuai Dong

doi:10.1103/PhysRevB.91.195145

paper

Charge transfer and hybrid ferroelectricity in (YFeO $_{3}$ ) $_{n}$ /(YTiO $_{3}$ ) $_{n}$ magnetic superlattices

arXiv:1505.05978 · doi:10.1103/PhysRevB.91.195145

Abstract

Interfaces in oxide heterostructures always provide a fertile ground for emergent properties. Charge transfer from a high energy band to a low energy opponent is naturally expected, as occurring in semiconductor $p$ - $n$ junctions. In this study, several exceptional physical phenomena have been predicted in (YFeO $_{3}$ ) $_{n}$ /(YTiO $_{3}$ ) $_{n}$ superlattices. First, the charge transfer between these Mott insulators is in opposite to the intuitive band alignment scenario. Second, hybrid ferroelectricity with a moderate polarization is generated in the $n = 2$ magnetic superlattice. Furthermore, the ferroelectric-type distortion can persist even if the ( $A B$ O $_{3}$ ) $_{2}$ /( $A B$ 'O $_{3}$ ) $_{2}$ system turns to be metallic, rending possible metallic ferroelectricity.

6 pages, 4 figures

Charge transfer and hybrid ferroelectricity in (YFeO $_{3}$ ) $_{n}$ /(YTiO $_{3}$ ) $_{n}$ magnetic superlattices

Abstract

References in corpus (10)

Cited by in corpus (6)

Charge transfer and hybrid ferroelectricity in (YFeO3​)n​/(YTiO3​)n​ magnetic superlattices

Abstract

References in corpus (10)

Cited by in corpus (6)

Charge transfer and hybrid ferroelectricity in (YFeO $_{3}$ ) $_{n}$ /(YTiO $_{3}$ ) $_{n}$ magnetic superlattices