J. D. G. Greener
;
A. V. Akimov
;
V. E. Gusev
;
Z. R. Kudrynskyi
;
P. H. Beton
;
Z. D. Kovalyuk
;
T. Taniguchi
(National Institute for Materials Science)
;
K. Watanabe
(National Institute for Materials Science)
;
A. J. Kent
;
A. Patanè
Collection
Citation
Description:
(abstract)We use picosecond ultrasonic techniques to investigate phonon transport in vdW InSe nanolayers and InSe/hBN heterostructures. Coherent acoustic phonons are generated and detected in these 2D systems and allow us to probe elastic parameters of different layers and their interfaces. In particular, our study of the elastic properties of the interface between vdW layers reveals a strong coupling over a wide range of frequencies up to 0.1 THz, offering prospects for high-frequency electronics and technologies that require control over the charge and phonon transport across an interface. In contrast, we reveal a weak coupling between the InSe nanolayers and sapphire substrates, relevant in thermoelectrics and sensing applications, which can require quasi-suspended layers.
Rights:
Keyword: Coherent acoustic phonons, van der Waals materials, phonon transport
Date published: 2018-08-09
Publisher: American Physical Society (APS)
Journal:
- Physical Review B (ISSN: 1550235X) vol. 98 issue. 7 075408
Funding:
- Engineering and Physical Sciences Research Council EP/M012700/1
- Leverhulme Trust
- National Academy of Sciences of Ukraine
- Ministry of Education, Culture, Sports, Science and Technology
Manuscript type: Publisher's version (Version of record)
MDR DOI:
First published URL: https://doi.org/10.1103/PhysRevB.98.075408
Related item:
Other identifier(s):
Contact agent:
Updated at: 2025-02-23 22:50:14 +0900
Published on MDR: 2025-02-23 22:50:14 +0900
| Filename | Size | |||
|---|---|---|---|---|
| Filename |
PhysRevB.98.075408.pdf
(Thumbnail)
application/pdf |
Size | 2.36 MB | Detail |