Boundary conditions for the effective-medium description of subwavelength multilayered structures

Gorlach, MA; Lapine, M

Boundary conditions for the effective-medium description of subwavelength multilayered structures

Gorlach, MA Lapine, M

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Publisher:: AMER PHYSICAL SOC
Publication Type:: Journal Article
Citation:: Physical Review B, 2020, 101, (7)
Issue Date:: 2020-02-15

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Field	Value	Language
dc.contributor.author	Gorlach, MA
dc.contributor.author	Lapine, M https://orcid.org/0000-0002-3557-929X
dc.date.accessioned	2020-11-05T05:16:20Z
dc.date.available	2020-11-05T05:16:20Z
dc.date.issued	2020-02-15
dc.identifier.citation	Physical Review B, 2020, 101, (7)
dc.identifier.issn	2469-9950
dc.identifier.issn	2469-9969
dc.identifier.uri	http://hdl.handle.net/10453/143771
dc.description.abstract	© 2020 American Physical Society. Nanostructures with one-dimensional periodicity, such as multilayered structures, are currently in the focus of active research in the context of hyperbolic metamaterials and photonic topological structures. An efficient way to describe the materials with subwavelength periodicity is based on the concept of effective material parameters, which can be rigorously derived incorporating both local and nonlocal responses. However, to provide any predictions relevant for applications, effective material parameters have to be supplemented by appropriate boundary conditions. In this work, we provide a comprehensive treatment of spatially dispersive bulk properties of multilayered metamaterials as well as derive boundary conditions for the averaged fields. We demonstrate that local bianisotropic model does not capture all the features related to second-order nonlocal effects in the bulk of metamaterial. As we prove, while the bulk response of multilayers does not depend on the unit-cell choice, effective boundary conditions are strongly sensitive to the sequence of layers and multilayer termination. The developed theory provides a clear interpretation of the recent experiments on the reflectance of all-dielectric deeply subwavelength multilayers suggesting further avenues to experimentally probe electromagnetic nonlocality in metamaterials.
dc.language	English
dc.publisher	AMER PHYSICAL SOC
dc.relation	http://purl.org/au-research/grants/arc/DP150103611
dc.relation.ispartof	Physical Review B
dc.relation.isbasedon	10.1103/PhysRevB.101.075127
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.rights	" Gorlach, M. A.; Lapine, M., Physical Review B, Boundary conditions for the effective-medium description of subwavelength multilayered structures, 10.1103/PhysRevB.101.075127, Copyright 2020 by the American Physical Society”
dc.subject	02 Physical Sciences, 03 Chemical Sciences, 09 Engineering
dc.subject.classification	Fluids & Plasmas
dc.title	Boundary conditions for the effective-medium description of subwavelength multilayered structures
dc.type	Journal Article
utslib.citation.volume	101
utslib.for	02 Physical Sciences
utslib.for	03 Chemical Sciences
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	recently_added	*
pubs.consider-herdc	false
dc.date.updated	2020-11-05T05:16:15Z
pubs.issue	7
pubs.publication-status	Published
pubs.volume	101
utslib.citation.issue	7

Abstract:

© 2020 American Physical Society. Nanostructures with one-dimensional periodicity, such as multilayered structures, are currently in the focus of active research in the context of hyperbolic metamaterials and photonic topological structures. An efficient way to describe the materials with subwavelength periodicity is based on the concept of effective material parameters, which can be rigorously derived incorporating both local and nonlocal responses. However, to provide any predictions relevant for applications, effective material parameters have to be supplemented by appropriate boundary conditions. In this work, we provide a comprehensive treatment of spatially dispersive bulk properties of multilayered metamaterials as well as derive boundary conditions for the averaged fields. We demonstrate that local bianisotropic model does not capture all the features related to second-order nonlocal effects in the bulk of metamaterial. As we prove, while the bulk response of multilayers does not depend on the unit-cell choice, effective boundary conditions are strongly sensitive to the sequence of layers and multilayer termination. The developed theory provides a clear interpretation of the recent experiments on the reflectance of all-dielectric deeply subwavelength multilayers suggesting further avenues to experimentally probe electromagnetic nonlocality in metamaterials.

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http://hdl.handle.net/10453/143771