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Article: Direct observation of Klein tunneling in phononic crystals

TitleDirect observation of Klein tunneling in phononic crystals
Authors
Issue Date2020
PublisherAmerican Association for the Advancement of Science. The Journal's web site is located at http://sciencemag.org
Citation
Science, 2020, v. 370 n. 6523, p. 1447-1450 How to Cite?
AbstractTunneling plays an essential role in many branches of physics and has found important applications. It is theoretically proposed that Klein tunneling occurs when, under normal incidence, quasiparticles exhibit unimpeded penetration through potential barriers independent of their height and width. We created a phononic heterojunction by sandwiching two types of artificial phononic crystals with different Dirac point energies. The direct observation of Klein tunneling as shown by the key feature of unity transmission is demonstrated. Our experiment reveals that Klein tunneling occurs over a broad band of acoustic frequency. The direct observation of Klein tunneling in phononic crystals could find applications in signal processing, supercollimated beams, and communications.
Persistent Identifierhttp://hdl.handle.net/10722/307952
ISSN
2023 Impact Factor: 44.7
2023 SCImago Journal Rankings: 11.902
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorJiang, X-
dc.contributor.authorShi, C-
dc.contributor.authorLi, Z-
dc.contributor.authorWang, S-
dc.contributor.authorWang, Y-
dc.contributor.authorYang, S-
dc.contributor.authorLouie, SG-
dc.contributor.authorZhang, X-
dc.date.accessioned2021-11-12T13:40:18Z-
dc.date.available2021-11-12T13:40:18Z-
dc.date.issued2020-
dc.identifier.citationScience, 2020, v. 370 n. 6523, p. 1447-1450-
dc.identifier.issn0036-8075-
dc.identifier.urihttp://hdl.handle.net/10722/307952-
dc.description.abstractTunneling plays an essential role in many branches of physics and has found important applications. It is theoretically proposed that Klein tunneling occurs when, under normal incidence, quasiparticles exhibit unimpeded penetration through potential barriers independent of their height and width. We created a phononic heterojunction by sandwiching two types of artificial phononic crystals with different Dirac point energies. The direct observation of Klein tunneling as shown by the key feature of unity transmission is demonstrated. Our experiment reveals that Klein tunneling occurs over a broad band of acoustic frequency. The direct observation of Klein tunneling in phononic crystals could find applications in signal processing, supercollimated beams, and communications.-
dc.languageeng-
dc.publisherAmerican Association for the Advancement of Science. The Journal's web site is located at http://sciencemag.org-
dc.relation.ispartofScience-
dc.rightsScience. Copyright © American Association for the Advancement of Science.-
dc.rightsThis is the author’s version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in [Science Journal Title] on [Volume number and date], DOI: [insert DOI number].-
dc.titleDirect observation of Klein tunneling in phononic crystals-
dc.typeArticle-
dc.identifier.emailZhang, X: president@hku.hk-
dc.identifier.authorityZhang, X=rp02411-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1126/science.abe2011-
dc.identifier.pmid33335060-
dc.identifier.scopuseid_2-s2.0-85098676383-
dc.identifier.hkuros329921-
dc.identifier.volume370-
dc.identifier.issue6523-
dc.identifier.spage1447-
dc.identifier.epage1450-
dc.identifier.isiWOS:000599959400042-
dc.publisher.placeUnited States-

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