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Title: Strongly extended diffusion length for the nonequilibrium magnons in Y 3 F e 5 O 12 by photoexcitation

Abstract

Y 3Fe 5O 12 (YIG) is known for its long magnon diffusion length. Although it has the known lowest damping rate, an even longer diffusion distance is still highly desired since it may lead to a much more efficient information transmission and processing. While most of previous works focused on the generation and detection of magnons in YIG, here we demonstrate how to depress the damping rate during the diffusion of magnon. By selectively exciting the spin state transition of the Fe ions in YIG, we successfully increase magnon diffusion length by one order of magnitude, i.e., from the previous reported ~10 μm up to ~156 μm (for the sample prepared by liquid phase epitaxy) and ~180 μm (for the sample prepared by pulsed laser deposition) at room temperature. The diffusion length, determined by nonlocal geometry, is ~30 μm for the magnons induced by visible light and above 150 μm for the laser of 980 nm. In addition to thermal gradient, light excitation affects the electron configuration of the Fe 3+ ion in YIG. Long-wavelength laser is more effective since it causes a transition of the Fe 3+ ions in FeO 6 octahedron from a high spin to a lowmore » spin state and thus causes a magnon softening which favors a long-distance diffusion. Furthermore, the present work paves the way toward an efficient tuning of magnon transport which is crucially important for magnon spintronics.« less

Authors:
 [1];  [2]; ORCiD logo [3];  [1];  [1];  [4];  [1];  [2];  [1];  [1];  [1];  [2];  [2];  [1]
  1. Northwestern Polytechnical Univ., Xi'an (China)
  2. Chinese Academy of Sciences (CAS), Beijing (China)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Chinese Academy of Science, Hefei (China)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1437892
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Materials
Additional Journal Information:
Journal Volume: 2; Journal Issue: 5; Journal ID: ISSN 2475-9953
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Wang, S. H., Li, G., Guo, E. J., Zhao, Y., Wang, J. Y., Zou, L. K., Yan, H., Cai, J. W., Zhang, Z. T., Wang, M., Tian, Y. Y., Zheng, X. L., Sun, J. R., and Jin, K. X. Strongly extended diffusion length for the nonequilibrium magnons in Y3Fe5O12 by photoexcitation. United States: N. p., 2018. Web. doi:10.1103/PhysRevMaterials.2.051401.
Wang, S. H., Li, G., Guo, E. J., Zhao, Y., Wang, J. Y., Zou, L. K., Yan, H., Cai, J. W., Zhang, Z. T., Wang, M., Tian, Y. Y., Zheng, X. L., Sun, J. R., & Jin, K. X. Strongly extended diffusion length for the nonequilibrium magnons in Y3Fe5O12 by photoexcitation. United States. doi:10.1103/PhysRevMaterials.2.051401.
Wang, S. H., Li, G., Guo, E. J., Zhao, Y., Wang, J. Y., Zou, L. K., Yan, H., Cai, J. W., Zhang, Z. T., Wang, M., Tian, Y. Y., Zheng, X. L., Sun, J. R., and Jin, K. X. Wed . "Strongly extended diffusion length for the nonequilibrium magnons in Y3Fe5O12 by photoexcitation". United States. doi:10.1103/PhysRevMaterials.2.051401. https://www.osti.gov/servlets/purl/1437892.
@article{osti_1437892,
title = {Strongly extended diffusion length for the nonequilibrium magnons in Y3Fe5O12 by photoexcitation},
author = {Wang, S. H. and Li, G. and Guo, E. J. and Zhao, Y. and Wang, J. Y. and Zou, L. K. and Yan, H. and Cai, J. W. and Zhang, Z. T. and Wang, M. and Tian, Y. Y. and Zheng, X. L. and Sun, J. R. and Jin, K. X.},
abstractNote = {Y3Fe5O12 (YIG) is known for its long magnon diffusion length. Although it has the known lowest damping rate, an even longer diffusion distance is still highly desired since it may lead to a much more efficient information transmission and processing. While most of previous works focused on the generation and detection of magnons in YIG, here we demonstrate how to depress the damping rate during the diffusion of magnon. By selectively exciting the spin state transition of the Fe ions in YIG, we successfully increase magnon diffusion length by one order of magnitude, i.e., from the previous reported ~10 μm up to ~156 μm (for the sample prepared by liquid phase epitaxy) and ~180 μm (for the sample prepared by pulsed laser deposition) at room temperature. The diffusion length, determined by nonlocal geometry, is ~30 μm for the magnons induced by visible light and above 150 μm for the laser of 980 nm. In addition to thermal gradient, light excitation affects the electron configuration of the Fe3+ ion in YIG. Long-wavelength laser is more effective since it causes a transition of the Fe3+ ions in FeO6 octahedron from a high spin to a low spin state and thus causes a magnon softening which favors a long-distance diffusion. Furthermore, the present work paves the way toward an efficient tuning of magnon transport which is crucially important for magnon spintronics.},
doi = {10.1103/PhysRevMaterials.2.051401},
journal = {Physical Review Materials},
number = 5,
volume = 2,
place = {United States},
year = {2018},
month = {5}
}

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FIG. 1 FIG. 1: A schematic diagram of the experimental setup.

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Works referenced in this record:

Spin-Torque Switching with the Giant Spin Hall Effect of Tantalum
journal, May 2012


Molecular Field Model and the Magnetization of YIG
journal, June 1964


Spin Seebeck effect and spin Hall magnetoresistance at high temperatures for a Pt/yttrium iron garnet hybrid structure
journal, January 2015

  • Wang, Shuanhu; Zou, Lvkuan; Zhang, Xu
  • Nanoscale, Vol. 7, Issue 42
  • DOI: 10.1039/C5NR05484B

Chemical solution synthesis and ferromagnetic resonance of epitaxial thin films of yttrium iron garnet
journal, December 2017


Magnon planar Hall effect and anisotropic magnetoresistance in a magnetic insulator
journal, April 2017


Effect of the magnon dispersion on the longitudinal spin Seebeck effect in yttrium iron garnets
journal, August 2015


Thermally driven long-range magnon spin currents in yttrium iron garnet due to intrinsic spin Seebeck effect
journal, November 2017


Paramagnetic Spin Seebeck Effect
journal, May 2015


Thermal Generation of Spin Current in an Antiferromagnet
journal, December 2015


Long-range pure magnon spin diffusion observed in a nonlocal spin-Seebeck geometry
journal, December 2015


Length Scale of the Spin Seebeck Effect
journal, August 2015


Influence of Thickness and Interface on the Low-Temperature Enhancement of the Spin Seebeck Effect in YIG Films
journal, July 2016


Thermal Spin Dynamics of Yttrium Iron Garnet
journal, November 2016


Antiferromagnetism. Theory of Superexchange Interaction
journal, July 1950


Observation of the spin Seebeck effect in epitaxial Fe 3 O 4 thin films
journal, February 2013

  • Ramos, R.; Kikkawa, T.; Uchida, K.
  • Applied Physics Letters, Vol. 102, Issue 7
  • DOI: 10.1063/1.4793486

Magnon spin-current theory for the longitudinal spin-Seebeck effect
journal, January 2014


Temperature dependence of the magnon spin diffusion length and magnon spin conductivity in the magnetic insulator yttrium iron garnet
journal, November 2016


β-Tantalum, a better candidate for spin-to-charge conversion
journal, January 2017


Photo-spin-voltaic effect
journal, April 2016

  • Ellsworth, David; Lu, Lei; Lan, Jin
  • Nature Physics, Vol. 12, Issue 9
  • DOI: 10.1038/nphys3738

Spin Waves
journal, January 1958


Criteria for accurate determination of the magnon relaxation length from the nonlocal spin Seebeck effect
journal, November 2017


Enhanced spin Seebeck effect signal due to spin-momentum locked topological surface states
journal, May 2016

  • Jiang, Zilong; Chang, Cui-Zu; Masir, Massoud Ramezani
  • Nature Communications, Vol. 7, Issue 1
  • DOI: 10.1038/ncomms11458

Transport Magnetic Proximity Effects in Platinum
journal, September 2012


Magnon-phonon effects in ferromagnetic manganites
journal, November 2001


Observation of longitudinal spin-Seebeck effect in magnetic insulators
journal, October 2010

  • Uchida, Ken-ichi; Adachi, Hiroto; Ota, Takeru
  • Applied Physics Letters, Vol. 97, Issue 17
  • DOI: 10.1063/1.3507386

Critical suppression of spin Seebeck effect by magnetic fields
journal, August 2015


Long-distance transport of magnon spin information in a magnetic insulator at room temperature
journal, September 2015

  • Cornelissen, L. J.; Liu, J.; Duine, R. A.
  • Nature Physics, Vol. 11, Issue 12
  • DOI: 10.1038/nphys3465

Magnon Mode Selective Spin Transport in Compensated Ferrimagnets
journal, May 2017


Longitudinal spin Seebeck effect: from fundamentals to applications
journal, August 2014


Absorption spectra of Y 3 Fe 5 O 12 (YIG) and Y 3 Ga 5 O 12 : Fe 3 +
journal, August 1974


Magnons and Phonons Optically Driven out of Local Equilibrium in a Magnetic Insulator
journal, August 2016


Pt Magnetic Polarization on Y 3 Fe 5 O 12 and Magnetotransport Characteristics
journal, April 2013


Optical properties of epitaxial iron garnet thin films
journal, March 1974


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