Work

Frustrated Dipole Order Induces Noncollinear Proper Ferrielectricity in Two Dimensions

Year: 2019

Type: article

Abstract: Within Landau theory, magnetism and polarity are homotopic, displaying a one-to-one correspondence between most physical characteristics. However, despite widely reported noncollinear magnetism, spontaneous noncollinear electric dipole order as a ground state is rare. Here, a dioxydihalides family is predicted to display noncollinear ferrielectricity, induced by competing ferroelectric and antiferroelectric soft modes. This intrinsic of dipoles generates unique physical properties, such as Z_{2}×Z_{2} topological domains, atomic-scale dipole vortices, and negative piezoelectricity.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.123.067601

Authors: Ling-Fang Lin, Yang Zhang, Adriana Moreo, Elbio Dagotto, Shuai Dong

Institutions: University of Tennessee at Knoxville, Southeast University, Oak Ridge National Laboratory

Language: English

Topic: Multiferroics and related materials

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: green