Pseudomagnetic fields for sound at the nanoscale
There is a growing effort in creating chiral transport of sound waves. However, most approaches so far have been confined to the macroscopic scale. Here, we propose an approach suitable to the nanoscale that is based on pseudomagnetic fields. These pseudomagnetic fields for sound waves are the analo...
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Published in | Proceedings of the National Academy of Sciences - PNAS Vol. 114; no. 17; pp. E3390 - E3395 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
United States
National Academy of Sciences
25.04.2017
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Series | PNAS Plus |
Subjects | |
Online Access | Get full text |
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Summary: | There is a growing effort in creating chiral transport of sound waves. However, most approaches so far have been confined to the macroscopic scale. Here, we propose an approach suitable to the nanoscale that is based on pseudomagnetic fields. These pseudomagnetic fields for sound waves are the analogue of what electrons experience in strained graphene. In our proposal, they are created by simple geometrical modifications of an existing and experimentally proven phononic crystal design, the snowflake crystal. This platform is robust, scalable, and well-suited for a variety of excitation and readout mechanisms, among them optomechanical approaches. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 Author contributions: V.P., O.J.P., and F.M. designed research; C.B., V.P., and F.M. performed research; C.B., V.P., and F.M. analyzed data; and C.B., V.P., O.J.P., and F.M. wrote the paper. Edited by Tom C. Lubensky, University of Pennsylvania, Philadelphia, PA, and approved March 10, 2017 (received for review September 27, 2016) |
ISSN: | 0027-8424 1091-6490 |
DOI: | 10.1073/pnas.1615503114 |