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Condensed Matter > Materials Science

arXiv:2206.09094 (cond-mat)
[Submitted on 18 Jun 2022]

Title:Free-Standing Epitaxial SrTiO$_3$ Nanomembranes via Remote Epitaxy using Hybrid Molecular Beam Epitaxy

Authors:Hyojin Yoon, Tristan K. Truttmann, Fengdeng Liu, Bethany E. Matthews, Sooho Choo, Qun Su, Vivek Saraswat, Sebastian Manzo, Michael S. Arnold, Mark E. Bowden, Jason K. Kawasaki, Steven J. Koester, Steven R. Spurgeon, Scott A. Chambers, Bharat Jalan
View a PDF of the paper titled Free-Standing Epitaxial SrTiO$_3$ Nanomembranes via Remote Epitaxy using Hybrid Molecular Beam Epitaxy, by Hyojin Yoon and 13 other authors
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Abstract:The epitaxial growth of functional materials using a substrate with a graphene layer is a highly desirable method for improving structural quality and obtaining free-standing epitaxial nano-membranes for scientific study, applications, and economical reuse of substrates. However, the aggressive oxidizing conditions typically employed to grow epitaxial perovskite oxides can damage graphene. Here, we demonstrate a technique based on hybrid molecular beam epitaxy that does not require an independent oxygen source to achieve epitaxial growth of complex oxides without damaging the underlying graphene. The technique produces films with self-regulating cation stoichiometry control and epitaxial orientation to the oxide substrate. Furthermore, the films can be exfoliated and transferred to foreign substrates while leaving the graphene on the original substrate. These results open the door to future studies of previously unattainable free-standing nano-membranes grown in an adsorption-controlled manner by hybrid molecular beam epitaxy, and has potentially important implications for the commercial application of perovskite oxides in flexible electronics.
Comments: 20 pages, 6 figures
Subjects: Materials Science (cond-mat.mtrl-sci); Applied Physics (physics.app-ph)
Cite as: arXiv:2206.09094 [cond-mat.mtrl-sci]
  (or arXiv:2206.09094v1 [cond-mat.mtrl-sci] for this version)
  https://doi.org/10.48550/arXiv.2206.09094
arXiv-issued DOI via DataCite

Submission history

From: Bharat Jalan [view email]
[v1] Sat, 18 Jun 2022 02:58:37 UTC (13,258 KB)
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