title: Continuous Magnetoelectric Control in Multiferroic DyMnO3 Films with Twin-like Domains.
abstract: The magnetic control of ferroelectric polarization is currently a central topic in the multiferroic researches, owing to the related gigantic magnetoelectric coupling and fascinating physics. Although a bunch of novel magnetoelectric effect have been discovered in multiferroics of magnetic origin, the manipulation of polarization was found to be fundamentally determined by the microscopic origin in a certain multiferroic phase, hindering the development of unusual magnetoelectric control. Here, we report emergent magnetoelectric control in DyMnO3/Nb:SrTiO3 (001) films showing twin-like domain structure. Our results demonstrate interesting magnetically induced partial switch of polarization due to the coexistence of polarizations along both the a-axis and c-axis enabled by the twin-like domain structure in DyMnO3 films, despite the polarization-switch was conventionally believed to be a one-step event in the bulk counterpart. Moreover, a continuous and periodic control of macroscopic polarization by an in-plane rotating magnetic field is evidenced in the thin films. This distinctive magnetic manipulation of polarization is the consequence of the cooperative action of the twin-like domains and the dual magnetic origin of polarization, which promises additional applications using the magnetic control of ferroelectricity.
authors.affiliation: School of Physics &Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China.|Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle (Saale), Germany.
authors.forename: Chengliang
authors.initials: C
authors.lastname: Lu
authors.affiliation: Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle (Saale), Germany.
authors.forename: Hakan
authors.initials: H
authors.lastname: Deniz
authors.affiliation: Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Li
authors.affiliation: Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
authors.forename: Jun-Ming
authors.initials: JM
authors.lastname: Liu
authors.affiliation: Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey, 08854, USA.|Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
authors.forename: Sang-Wook
authors.initials: SW
authors.lastname: Cheong
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