Spin-Cherenkov Effect in a Magnetic Nanostrip with Interfacial Dzyaloshinskii-Moriya Interaction

Overview

Journal Sci Rep

Specialty Science

Date 2016 May 5

PMID 27143311

Citations 2

Authors

Jing Xia

Xichao Zhang

Ming Yan

Weisheng Zhao

Yan Zhou

Affiliations

Soon will be listed here.

Abstract

Spin-Cherenkov effect enables strong excitations of spin waves (SWs) with nonlinear wave dispersions. The Dzyaloshinskii-Moriya interaction (DMI) results in anisotropy and nonreciprocity of SWs propagation. In this work, we study the effect of the interfacial DMI on SW Cherenkov excitations in permalloy thin-film strips within the framework of micromagnetism. By performing micromagnetic simulations, it is shown that coherent SWs are excited when the velocity of a moving magnetic source exceeds the propagation velocity of the SWs. Moreover, the threshold velocity of the moving magnetic source with finite DMI can be reduced compared to the case of zero DMI. It thereby provides a promising route towards efficient spin wave generation and propagation, with potential applications in spintronic and magnonic devices.

Citing Articles

Micromagnetic Study on Branch Hybridizations of Spin-Wave Modes in Ferromagnetic Nanostrips.

Yin B, Yang M, Zeng X, Yan M Materials (Basel). 2022; 15(17).

PMID: 36079526 PMC: 9457705. DOI: 10.3390/ma15176144.

Harnessing Multi-Photon Absorption to Produce Three-Dimensional Magnetic Structures at the Nanoscale.

Hunt M, Taverne M, Askey J, May A, van den Berg A, Ho Y Materials (Basel). 2020; 13(3).

PMID: 32046068 PMC: 7041506. DOI: 10.3390/ma13030761.

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