High-performance nanoscale topological energy transduction

Abstract The realization of high-performance, small-footprint, on-chip inductors remains a challenge in radio-frequency and power microelectronics, where they perform vital energy transduction in filters and power converters. Modern planar inductors consist of metallic spirals that consume significa...

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Autores principales:	Timothy M. Philip, Matthew J. Gilbert
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/acda483a56a04570a565160e408fc321
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spelling	oai:doaj.org-article:acda483a56a04570a565160e408fc3212021-12-02T11:52:44ZHigh-performance nanoscale topological energy transduction10.1038/s41598-017-06965-82045-2322https://doaj.org/article/acda483a56a04570a565160e408fc3212017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06965-8https://doaj.org/toc/2045-2322Abstract The realization of high-performance, small-footprint, on-chip inductors remains a challenge in radio-frequency and power microelectronics, where they perform vital energy transduction in filters and power converters. Modern planar inductors consist of metallic spirals that consume significant chip area, resulting in low inductance densities. We present a novel method for magnetic energy transduction that utilizes ferromagnetic islands (FIs) on the surface of a 3D time-reversal-invariant topological insulator (TI) to produce paradigmatically different inductors. Depending on the chemical potential, the FIs induce either an anomalous or quantum anomalous Hall effect in the topological surface states. These Hall effects direct current around the FIs, concentrating magnetic flux and producing a highly inductive device. Using a novel self-consistent simulation that couples AC non-equilibrium Green functions to fully electrodynamic solutions of Maxwell’s equations, we demonstrate excellent inductance densities up to terahertz frequencies, thus harnessing the unique properties of topological materials for practical device applications.Timothy M. PhilipMatthew J. GilbertNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Timothy M. Philip Matthew J. Gilbert High-performance nanoscale topological energy transduction
description	Abstract The realization of high-performance, small-footprint, on-chip inductors remains a challenge in radio-frequency and power microelectronics, where they perform vital energy transduction in filters and power converters. Modern planar inductors consist of metallic spirals that consume significant chip area, resulting in low inductance densities. We present a novel method for magnetic energy transduction that utilizes ferromagnetic islands (FIs) on the surface of a 3D time-reversal-invariant topological insulator (TI) to produce paradigmatically different inductors. Depending on the chemical potential, the FIs induce either an anomalous or quantum anomalous Hall effect in the topological surface states. These Hall effects direct current around the FIs, concentrating magnetic flux and producing a highly inductive device. Using a novel self-consistent simulation that couples AC non-equilibrium Green functions to fully electrodynamic solutions of Maxwell’s equations, we demonstrate excellent inductance densities up to terahertz frequencies, thus harnessing the unique properties of topological materials for practical device applications.
format	article
author	Timothy M. Philip Matthew J. Gilbert
author_facet	Timothy M. Philip Matthew J. Gilbert
author_sort	Timothy M. Philip
title	High-performance nanoscale topological energy transduction
title_short	High-performance nanoscale topological energy transduction
title_full	High-performance nanoscale topological energy transduction
title_fullStr	High-performance nanoscale topological energy transduction
title_full_unstemmed	High-performance nanoscale topological energy transduction
title_sort	high-performance nanoscale topological energy transduction
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/acda483a56a04570a565160e408fc321
work_keys_str_mv	AT timothymphilip highperformancenanoscaletopologicalenergytransduction AT matthewjgilbert highperformancenanoscaletopologicalenergytransduction
_version_	1718394945721597952

High-performance nanoscale topological energy transduction

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