Electric field control of phonon angular momentum in perovskite BaTiO3

被引：4

作者：

Moseni, Kevin ^{[1
]}

Wilson, Richard B. ^{[1
,2
]}

Coh, Sinisa ^{[1
,2
]}

机构：

[1] Univ Calif Riverside, Mat Sci & Engn, Riverside, CA 92521 USA

[2] Univ Calif Riverside, Mech Engn, Riverside, CA 92521 USA

来源：

PHYSICAL REVIEW MATERIALS | 2022年 / 6卷 / 10期

关键词：

LATTICE-DYNAMICS;

D O I：

10.1103/PhysRevMaterials.6.104410

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We find that in BaTiO3 the phonon angular momentum is dominantly pointing in directions perpendicular to the electrical polarization. Therefore, the external electric field in ferroelectric BaTiO3 does not control only the direction of electrical polarization but also the direction of the phonon angular momentum. This finding opens up the possibility of electric field control of physical phenomena that depend on phonon angular momentum. We construct an intuitive model, based on our first-principles calculations, that captures the origin of the relationship between phonon angular momentum and electric polarization.

引用

页数：12

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