Dynamic nonreciprocity in loss-compensated piezophononic media

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dc.contributor.author Merkel, Aurélien Paul Lucien
dc.contributor.author Willatzen, Morten
dc.contributor.author Christensen, Johan
dc.date.accessioned 2018-09-17T10:29:21Z
dc.date.available 2018-09-17T10:29:21Z
dc.date.issued 2018-03-28
dc.identifier.bibliographicCitation Physical review applied, 9, 3 (034033)
dc.identifier.issn 2331-7019
dc.identifier.uri http://hdl.handle.net/10016/27421
dc.description.abstract Violating time-reversal symmetry enables one to engineer nonreciprocal structures for isolating and rectifying sound and mechanical vibrations. Rectifying sound is commonly achieved in nonlinear media, but the operation is inherently linked to weak and distorted signals. Here, we show how a pronounced electron-phonon coupling in linear piezophononic media under electrical bias can generate full mechanical rectification of broad spectral width, which permits the isolation of pulsed vibrations while keeping the wave-front shape fully intact. In this context, we deliberately show how the acoustoelectric effect can provide active loss compensation against lattice anharmonicity and thermoelastic damping. Further, our predictions confirm tunable nonreciprocity at an ultralarge contrast ratio, which should open the doors for future mechanical diodes and compact ultrasonic transducers for sensing and imaging.
dc.description.sponsorship J. C. acknowledges the support from the European Research Council (ERC) through the Starting Grant No. 714577 PHONOMETA and from the MINECO through a Ramon y Cajal grant (Grant No. RYC-2015-17156).
dc.format.extent 6
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher American Physical Society
dc.rights © 2018 American Physical Society
dc.subject.other Acoustic phonons
dc.subject.other Elasticity
dc.subject.other Electron-phonon coupling
dc.subject.other Piezoelectricity
dc.subject.other Fluid Dynamics
dc.subject.other Acoustic metamaterials
dc.subject.other Diodes
dc.subject.other Functional materials
dc.title Dynamic nonreciprocity in loss-compensated piezophononic media
dc.type article
dc.subject.eciencia Física
dc.subject.eciencia Materiales
dc.identifier.doi https://doi.org/10.1103/PhysRevApplied.9.034033
dc.rights.accessRights openAccess
dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/714577
dc.relation.projectID Gobierno de España. RYC-2015-17156
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 1
dc.identifier.publicationissue 3 (034033)
dc.identifier.publicationlastpage 6
dc.identifier.publicationtitle Physical review applied
dc.identifier.publicationvolume 9
dc.identifier.uxxi AR/0000021239
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