多铁性
材料科学
凝聚态物理
铁弹性
极化密度
铁电性
极化(电化学)
纳米技术
磁化
磁场
光电子学
物理
化学
量子力学
电介质
物理化学
作者
S. Toyoda,Manfred Fiebig,Lea Forster,Taka‐hisa Arima,Y. Tokura,Norio Ogawa
标识
DOI:10.1038/s41467-021-26451-0
摘要
Local and low-dimensional structures, such as interfaces, domain walls and structural defects, may exhibit physical properties different from the bulk. Therein, a wide variety of local phases were discovered including conductive interfaces, sheet superconductivity, and magnetoelectric domain walls. The confinement of combined magnetic and electric orders to spatially selected regions may be particularly relevant for future technological applications because it may serve as basis of electrically controllable magnetic memory devices. However, direct observation of magnetoelectric low-dimensional structures cannot readily be done partly because of the lack of experimental techniques locally probing their physical nature. Here, we report an observation of multiferroic ribbon-like domains in a non-multiferroic environment in MnWO4. Using optical second harmonic generation imaging, we reveal that a multiferroic phase is stabilized by locally generated strain while the bulk magnetic structure is non-multiferroic. We further find that the confined multiferroic state retains domains with different directions of electric polarization and we demonstrate deterministic writing of a multiferroic state embedded in a non-multiferroic environment.
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