Publication

Phase control of spin waves based on a magnetic defect in a one-dimensional magnonic crystal

Dirk Grundler, Sho Watanabe
2018
Journal Articles

Abstract

Magnonic crystals are interesting for spin-wave based data processing. We investigate one-dimensional magnonic crystals (1D MCs) consisting of bistable Co20Fe60B20 nanostripes separated by 75 nm wide air gaps. By adjusting the magnetic history, we program a single stripe of opposed magnetization in an otherwise saturated 1D MC. Its influence on propagating spin waves is studied via broadband microwave spectroscopy. Depending on an in-plane bias magnetic field, we observe spin wave phase shifts of up to almost π and field-controlled attenuation attributed to the reversed nanostripe. Our findings are of importance for magnetologics, where the control of spin wave phases is essential.

Official source

https://infoscience.epfl.ch/entities/publication/d9a73d79-f788-471b-af0c-b585e0244a2b

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Dirk Grundler, Sho Watanabe
2018
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/d9a73d79-f788-471b-af0c-b585e0244a2b

About this result

Related concepts (32)

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Gravitational waves are waves of the intensity of gravity that are generated by the accelerated masses of an orbital binary system, and propagate as waves outward from their source at the speed of light. They were first proposed by Oliver Heaviside in 1893 and then later by Henri Poincaré in 1905 as waves similar to electromagnetic waves but the gravitational equivalent. Gravitational waves were later predicted in 1916 by Albert Einstein on the basis of his general theory of relativity as ripples in spacetime.

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Phase control of spin waves based on a magnetic defect in a one-dimensional magnonic crystal

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