Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session M55: Nickelates and Manganites
11:30 AM–2:06 PM,
Wednesday, March 17, 2021
Sponsoring
Unit:
DMP
Chair: Yuri Suzuki, Stanford Univ
Abstract: M55.00002 : Mapping electronic phase coexistence in nickelate superlattices by STEM-EELS*
12:06 PM–12:18 PM
Live
Presenter:
Bernat Mundet
(Department of quantum matter physics, Univ of Geneva)
Authors:
Bernat Mundet
(Department of quantum matter physics, Univ of Geneva)
Duncan T.L. Alexander
(Electron Spectrometry and Microscopy Laboratory, EPFL, Lausanne)
Claribel Dominguez Ordonez
(Department of quantum matter physics, Univ of Geneva)
Jennifer Fowlie
(Department of quantum matter physics, Univ of Geneva)
Marta Gibert
(University of Zurich)
Jean-Marc Triscone
(Department of quantum matter physics, Univ of Geneva)
The feasibility of the experiment is demonstrated by using two NdNiO3/SmNiO3 superlattices (SLs) whose constituent SmNiO3 layers are either insulating or metallic at room temperature depending on their corresponding layer thickness. [1] By tracing the evolution of specific fingerprints present in the EELS fine structures, we are able to map the metallic and insulating regions in both SLs, and to further estimate the width associated to the metallic/insulating boundaries.
[1] C. Domínguez et al., Nat. Mater. 19, 1182 (2020)
*This work was supported by the Swiss National Science Foundation through Division II. The research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Program (FP7/2007-2013)/ERC Grant Agreement 319286 (Q-MAC).
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