Epitaxial Antiperovskite/Perovskite Heterostructures for Materials Design
Quintila, Camilo; Song, Kyong; Shao, Ding-Fu; Xie, Lin; Nan, Tianxiang; Paudel, Tula; Campell, Neil; Pan, Xiaoqing; Tybell, Per Thomas Martin; Rzchowski, Mark S.; Tsymbal, Evgeny Yu.; Choi, Si-Young; Eom, Chang-Beom
Peer reviewed, Journal article
Published version
Permanent lenke
https://hdl.handle.net/11250/2733260Utgivelsesdato
2020Metadata
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Originalversjon
10.1126/sciadv.aba4017Sammendrag
Engineered heterostructures formed by complex oxide materials are a rich source of emergent phenomena and technological applications. In the quest for new functionality, a vastly unexplored avenue is interfacing oxide perovskites with materials having dissimilar crystallochemical properties. Here, we propose a unique class of heterointerfaces based on nitride antiperovskite and oxide perovskite materials as a previously unidentified direction for materials design. We demonstrate the fabrication of atomically sharp interfaces between nitride antiperovskite Mn3GaN and oxide perovskites (La0.3Sr0.7)(Al0.65Ta0.35)O3 and SrTiO3. Using atomic-resolution imaging/spectroscopic techniques and first-principles calculations, we determine the atomic-scale structure, composition, and bonding at the interface. The epitaxial antiperovskite/perovskite heterointerface is mediated by a coherent interfacial monolayer that interpolates between the two antistructures. We anticipate our results to be an important step for the development of functional antiperovskite/perovskite heterostructures, combining their unique characteristics such as topological properties for ultralow-power applications.