Acoustic confinement phenomena in oxide multifunctional nanophononic devices

A. E. Bruchhausen, N. D. Lanzillotti-Kimura, B. Jusserand, A. Soukiassian, L. Xie, X. Q. Pan, T. Dekorsy, D. G. Schlom, and A. Fainstein
Phys. Rev. Materials 2, 106002 – Published 11 October 2018
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Abstract

Engineering of phononic resonances in ferroelectric structures is a new knob to realize novel multifunctional devices. Here we show the possibility of predictively designing and fabricating phononic nanoresonators utilizing combinations of MBE-grown insulating (BaTiO3, SrTiO3) and metallic (SrRuO3) oxides. We experimentally demonstrate the confinement of acoustic waves in the 100-GHz frequency range in a phonon nanocavity, and the the time and spatial beatings resulting from the coupling of two different hybrid nanocavities forming an acoustic molecule. Additionally, the direct measurement of Bloch-like oscillations of acoustic phonons is observed in a system formed by ten coupled resonators. Utilizing coherent phonon generation techniques, we study phonon dynamics directly in the time domain. The metallic SrRuO3 layer introduces a local phonon generator and transducer that allows for the spatial, spectral, and time-domain monitoring of the complex generated waves. Our results introduce ferroelectric cavity systems as a new realm for the study of complex wave localization phenomena at the nanoscale. These systems can be successfully designed and conceived using state of the art growth techniques that combine perovskite oxides possessing multifunctional properties.

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  • Received 1 December 2017

DOI:https://doi.org/10.1103/PhysRevMaterials.2.106002

©2018 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

A. E. Bruchhausen1,2,*, N. D. Lanzillotti-Kimura1,3,†, B. Jusserand4, A. Soukiassian5, L. Xie6,7, X. Q. Pan7, T. Dekorsy2,8, D. G. Schlom5,9, and A. Fainstein1

  • 1Centro Atómico Bariloche & Instituto Balseiro (C.N.E.A.) and CONICET, 8400 S. C. de Bariloche, R. N., Argentina
  • 2Center for Applied Photonics and Department of Physics, University of Konstanz, D-78457 Konstanz, Germany
  • 3Centre de Nanosciences et de Nanotechnologies, CNRS, Université Paris-Sud, Université Paris-Saclay, C2N, Avenue de la Vauve, 91120 Palaiseau, France
  • 4Institut des NanoSciences de Paris, UMR 7588 C.N.R.S.-Université Pierre et Marie Curie, 75015 Paris, France
  • 5Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, USA
  • 6National Laboratory of Solid State Microstructures and College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, People's Republic of China
  • 7Department of Chemical Engineering and Materials Science, University of California Irvine, Irvine, California 92697, USA
  • 8Institute of Technical Physics, German Aerospace Center (DLR), Pfaffenwaldring 38-40, 70569 Stuttgart, Germany
  • 9Kavli Institute at Cornell for Nanoscale Science, Ithaca, New York 14853, USA

  • *axel.bruchhausen@cab.cnea.gov.ar
  • daniel.kimura@c2n.upsaclay.fr

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Vol. 2, Iss. 10 — October 2018

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