Coupling Ferroelectricity with Spin-Valley Physics in Oxide-Based Heterostructures

被引：35

作者：

Yamauchi, Kunihiko ^{[1
]}

Barone, Paolo ^{[2
]}

Shishidou, Tatsuya ^{[3
]}

Oguchi, Tamio ^{[1
]}

Picozzi, Silvia ^{[2
]}

机构：

[1] Osaka Univ, ISIR SANKEN, Ibaraki, Osaka 5670047, Japan

[2] CNR, SPIN, I-67100 Laquila, Italy

[3] Hiroshima Univ, ADSM, Dept Quantum Matter, Higashihiroshima 7398530, Japan

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 115卷 / 03期

关键词：

POLARIZATION; TRANSITION; CRYSTALLINE;

D O I：

10.1103/PhysRevLett.115.037602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The coupling of spin and valley physics is nowadays regarded as a promising route toward next-generation spintronic and valleytronic devices. In the aim of engineering functional properties for valleytronic applications, we focus on the ferroelectric heterostructure BiAlO3/BiIrO3, where the complex interplay among a trigonal crystal field, layer degrees of freedom, and spin-orbit coupling mediates a strong spin-valley coupling. Furthermore, we show that ferroelectricity provides a nonvolatile handle to manipulate and switch the emerging valley-contrasting spin polarization.

引用

页数：5

共 44 条

[1] Theoretical prediction of new high-performance lead-free piezoelectrics [J].