DataVXACS Applied Materials & InterfacesPaper
journal article·2022-02-02

Ferroelectric Proximity Effect and Topological Hall Effect in SrRuO3/BiFeO3 Multilayers

Xiaokang Yao, Can Wang, Er-Jia Guo, Xinyan Wang, Xiaomei Li, Lei Liao, Yong Zhou, Shan Lin, Qiao Jin, Chen Ge, Meng He, Xuedong Bai, Peng Gao, Guozhen Yang, Kui-juan Jin

ACS Applied Materials & Interfaces· Volume 14· Issue 4
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Source abstract

Abstract

Interfaces between complex oxides provide a unique opportunity to discover novel interfacial physics and functionalities. Here, we fabricate the multilayers of itinerant ferromagnet SrRuO3 (SRO) and multiferroic BiFeO3 (BFO) with atomically sharp interfaces. Atomically resolved transmission electron microscopy reveals that a large ionic displacement in BFO can penetrate into SRO layers near the BFO/SRO interfaces to a depth of 2–3 unit cells, indicating the ferroelectric proximity effect. A topological Hall effect is indicated by hump-like anomalies in the Hall measurements of the multilayer with a moderate thickness of the SRO layer. With magnetic measurements, it can be further confirmed that each SRO layer in the multilayers can be divided into interfacial and middle regions, which possess different magnetic ground states. Our work highlights the key role of functional heterointerfaces in exotic properties and provides an important guideline to design spintronic devices based on magnetic skyrmions.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Multiferroics and related materials · Advanced Condensed Matter Physics · Electronic and Structural Properties of Oxides

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China

International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China

Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Funding

Ministry of Science and Technology of the People's Republic of China · Natural Science Foundation of Beijing Municipality · Youth Innovation Promotion Association of the Chinese Academy of Sciences · National Natural Science Foundation of China · Beijing Municipal Science and Technology Commission · Chinese Academy of Sciences

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