Ferroelectricity in spiral magnets
Maxim Mostovoy,Maxim Mostovoy +1 more
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TLDR
A phenomenological theory of inhomogeneous ferroelectric magnets is presented, which describes their thermodynamics and magnetic field behavior, and shows that electric polarization can also be induced at domain walls and that magnetic vortices carry electric charge.Abstract:
It was recently observed that the ferroelectrics showing the strongest sensitivity to an applied magnetic field are spiral magnets. We present a phenomenological theory of inhomogeneous ferroelectric magnets, which describes their thermodynamics and magnetic field behavior, e.g., dielectric susceptibility anomalies at magnetic transitions and sudden flops of electric polarization in an applied magnetic field. We show that electric polarization can also be induced at domain walls and that magnetic vortices carry electric charge.read more
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Multiferroics: a magnetic twist for ferroelectricity
TL;DR: It is found that even a weak magnetoelectric interaction can lead to spectacular cross-coupling effects when it induces electric polarization in a magnetically ordered state.
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Physics and Applications of Bismuth Ferrite
Gustau Catalan,James F. Scott +1 more
TL;DR: In this paper, the authors summarize both the basic physics and unresolved aspects of BiFeO3 and device applications, which center on spintronics and memory devices that can be addressed both electrically and magnetically.
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Multiferroicity: the coupling between magnetic and polarization orders
TL;DR: In this article, the authors highlight the physical concepts of multiferroicity and the current challenges to integrate the magnetism and ferroelectricity into a single-phase system and summarize various strategies used to combine the two types of order.
Journal ArticleDOI
Conduction at domain walls in oxide multiferroics
Jan Seidel,Lane W. Martin,Lane W. Martin,Qing He,Q. Zhan,Ying-Hao Chu,A. Rother,M. E. Hawkridge,Petro Maksymovych,Pu Yu,M. Gajek,Nina Balke,Sergei V. Kalinin,Sibylle Gemming,Feng Wang,Gustau Catalan,James F. Scott,Nicola A. Spaldin,Joseph Orenstein,Joseph Orenstein,Ramamoorthy Ramesh,Ramamoorthy Ramesh +21 more
TL;DR: The observation of room-temperature electronic conductivity at ferroelectric domain walls in the insulating multiferroic BiFeO(3) shows that the conductivity correlates with structurally driven changes in both the electrostatic potential and the local electronic structure, which shows a decrease in the bandgap at the domain wall.
Journal ArticleDOI
Domain wall nanoelectronics
Gustau Catalan,Jan Seidel,Jan Seidel,Jan Seidel,Ramamoorthy Ramesh,Ramamoorthy Ramesh,James F. Scott +6 more
TL;DR: In this paper, a review of magnetoelectric domain walls is presented, focusing on magneto-electrics and multiferroics but making comparisons where possible with magnetic domains and domain walls.
References
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Book
Electrodynamics of continuous media
TL;DR: In this article, the propagation of electromagnetic waves and X-ray diffraction of X rays in crystals are discussed. But they do not consider the effects of superconductivity on superconducting conductors.