Magnetic Snell's law and spin-wave fiber with Dzyaloshinskii-Moriya interaction

Yu, Weichao; Lan, Jin; Wu, Ruqian; Xiao, Jiang

doi:10.1103/physrevb.94.140410

Title: Magnetic Snell's law and spin-wave fiber with Dzyaloshinskii-Moriya interaction

Abstract

Spin waves are collective excitations propagating in the magnetic medium with ordered magnetizations. Magnonics, utilizing the spin wave (magnon) as an information carrier, is a promising candidate for low-dissipation computation and communication technologies. In this work, we discover that, due to the Dzyaloshinskii-Moriya interaction, the scattering behavior of the spin wave at a magnetic domain wall follows a generalized Snell's law, where two magnetic domains work as two different mediums. Similar to optical total reflection that occurs at water-air interfaces, spin waves may experience total reflection at the magnetic domain walls when their incident angle is larger than a critical value. We design a spin-wave fiber using a magnetic domain structure with two domain walls, and demonstrate that such a spin-wave fiber can transmit spin waves over long distances by total internal reflections, in analogy to an optical fiber.

Authors:

Yu, Weichao ^[1]; Lan, Jin ^[1]; Wu, Ruqian ^[2]; Xiao, Jiang ^[3]

Fudan Univ., Shanghai (China). State Key Lab. of Surface Physics
Fudan Univ., Shanghai (China). State Key Lab. of Surface Physics; Univ. of California, Irvine, CA (United States)
Fudan Univ., Shanghai (China). State Key Lab. of Surface Physics; Collaborative Innovation Center of Advanced Microstructures, Nanjing (China)

Publication Date:: Tue Oct 11 00:00:00 EDT 2016

Research Org.:: Univ. of California, Irvine, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC); National Natural Science Foundation of China (NSFC); National Basic Research Program of China

OSTI Identifier:: 1535774

Alternate Identifier(s):: OSTI ID: 1328633

Grant/Contract Number:: FG02-05ER46237; 11474065; 2014CB921600; 2015CB921400.

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 94; Journal Issue: 14; Journal ID: ISSN 2469-9950

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; domain walls; Dzyaloshinskii-Moriya interaction; magnons; spin waves; fibers

Citation Formats


                    Yu, Weichao, Lan, Jin, Wu, Ruqian, and Xiao, Jiang. Magnetic Snell's law and spin-wave fiber with Dzyaloshinskii-Moriya interaction.  United States: N. p., 2016. 
Web.  doi:10.1103/physrevb.94.140410.

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                    Yu, Weichao, Lan, Jin, Wu, Ruqian, & Xiao, Jiang. Magnetic Snell's law and spin-wave fiber with Dzyaloshinskii-Moriya interaction.  United States.  https://doi.org/10.1103/physrevb.94.140410

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                    Yu, Weichao, Lan, Jin, Wu, Ruqian, and Xiao, Jiang. Tue .  
"Magnetic Snell's law and spin-wave fiber with Dzyaloshinskii-Moriya interaction".  United States.  https://doi.org/10.1103/physrevb.94.140410.  https://www.osti.gov/servlets/purl/1535774.

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@article{osti_1535774,

  title        = {Magnetic Snell's law and spin-wave fiber with Dzyaloshinskii-Moriya interaction},

  author       = {Yu, Weichao and Lan, Jin and Wu, Ruqian and Xiao, Jiang},

  abstractNote = {Spin waves are collective excitations propagating in the magnetic medium with ordered magnetizations. Magnonics, utilizing the spin wave (magnon) as an information carrier, is a promising candidate for low-dissipation computation and communication technologies. In this work, we discover that, due to the Dzyaloshinskii-Moriya interaction, the scattering behavior of the spin wave at a magnetic domain wall follows a generalized Snell's law, where two magnetic domains work as two different mediums. Similar to optical total reflection that occurs at water-air interfaces, spin waves may experience total reflection at the magnetic domain walls when their incident angle is larger than a critical value. We design a spin-wave fiber using a magnetic domain structure with two domain walls, and demonstrate that such a spin-wave fiber can transmit spin waves over long distances by total internal reflections, in analogy to an optical fiber.},

  doi          = {10.1103/physrevb.94.140410},

  journal      = {Physical Review B},

  number       = 14,

  volume       = 94,

  place        = {United States},

  year         = {Tue Oct 11 00:00:00 EDT 2016},

  month        = {Tue Oct 11 00:00:00 EDT 2016}

}

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Journal Article:

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Accepted Manuscript (DOE)

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https://doi.org/10.1103/physrevb.94.140410

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