A1 Journal article (refereed)
Acoustic wave tunneling across a vacuum gap between two piezoelectric crystals with arbitrary symmetry and orientation (2022)

Geng, Z., & Maasilta, I. J. (2022). Acoustic wave tunneling across a vacuum gap between two piezoelectric crystals with arbitrary symmetry and orientation. Physical Review Research, 4(3), Article 033073. https://doi.org/10.1103/PhysRevResearch.4.033073

JYU authors or editors

Geng, Zhuoran
Maasilta, Ilari

Publication details

All authors or editors: Geng, Zhuoran; Maasilta, Ilari J.

Journal or series: Physical Review Research

eISSN: 2643-1564

Publication year: 2022

Publication date: 25/07/2022

Volume: 4

Issue number: 3

Article number: 033073

Publisher: American Physical Society (APS)

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevResearch.4.033073

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/82788

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2205.07472

Abstract

It is not widely appreciated that an acoustic wave can “jump” or “tunnel” across a vacuum gap between two piezoelectric solids, nor has the general case been formulated or studied in detail. Here, we remedy that situation, by presenting a general formalism and approach to study such an acoustic tunneling effect between two arbitrarily oriented anisotropic piezoelectric semi-infinite crystals. The approach allows one to solve for the reflection and transmission coefficients of all the partial-wave modes, and is amenable to practical numerical or even analytical implementation, as we demonstrate by a few chosen examples. The formalism can be used in the future for quantitative studies of the tunneling effect in connection not only with the manipulation of acoustic waves, but with many other areas of physics of vibrations such as heat transport, for example.

Keywords: solid-state physics; crystals; wave motion; oscillations; phonons