Bulletin of the American Physical Society
APS March Meeting 2018
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session A09: Ferroic oxides - Domain and Domain Walls
8:00 AM–11:00 AM,
Monday, March 5, 2018
LACC Room: 301A
Sponsoring Unit: DMP
Chair: Seiji Kojima, University of Tsukuba
Abstract: A09.00005 : Universality of Topological Vortex Domains in Layered Perovskites*
8:48 AM–9:00 AM
In numerous functional materials, such as steels, ferroelectrics and magnets, new functionalities can be achieved through the engineering of the domain structures, which are associated with the ordering of certain parameters within the material. The recent progress in technologies that enable imaging at atomic-scale spatial resolution has transformed our understanding of domain topology: along with simple stripe-like or irregularly shaped domains, intriguing vortex-type topological domain configurations often appear in complex materials. It turns out that vortex domains are rather common in layered perovskites such as Ca3-xSrxTi2O7. In Ca3-xSrxTi2O7, the vortex domain formation, associated with the existence of abundant Néel-type ferroelectric walls, results in the presence of numerous conducting charged walls. The relationship between two distinct vortex domains and the emergence of polar-antipolar order at domain walls will be also discussed.
The work at Rutgers is funded by the Gordon and Betty Moore Foundation’s EPiQS Initiative through Grant GBMF4413 to the Rutgers Center for Emergent Materials. The crystal growth at Rutgers was supported by the NSF MRI grant, MRI-1532006.
The American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics.
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