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Title: Spin Hall-induced auto-oscillations in ultrathin YIG grown on Pt

Abstract

We experimentally study nanowire-shaped spin-Hall nano-oscillators based on nanometer-thick epitaxial films of Yttrium Iron Garnet grown on top of a layer of Pt. We show that, although these films are characterized by significantly larger magnetic damping in comparison with the films grown directly on Gadolinium Gallium Garnet, they allow one to achieve spin current-driven auto-oscillations at comparable current densities, which can be an indication of the better transparency of the interface to the spin current. These observations suggest a route for improvement of the flexibility of insulator-based spintronic devices and their compatibility with semiconductor technology.

Authors:
 [1];  [2];  [3];  [1];  [4];  [5];  [5];  [6];  [6];  [3];  [2];  [7]
  1. Univ. of Münster (Germany). Inst. for Applied Physics. Center for Nanotechnology
  2. Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy
  3. Univ. of California, Riverside, CA (United States). Dept. of Physics and Astronomy
  4. Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy; Univ. of California, Riverside, CA (United States). Dept. of Physics and Astronomy
  5. Russian Academy of Sciences (RAS), Ekaterinburg (Russian Federation). Inst. of Metal Physics
  6. Univ. of Texas, Austin, TX (United States). Dept. of Physics. Center for Complex Quantum Systems
  7. Univ. of Münster (Germany). Inst. for Applied Physics. Center for Nanotechnology; Russian Academy of Sciences (RAS), Ekaterinburg (Russian Federation). Inst. of Metal Physics
Publication Date:
Research Org.:
Univ. of California, Riverside, CA (United States); Univ. of Münster (Germany); Russian Academy of Sciences (RAS), Ekaterinburg (Russian Federation)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); German Research Foundation (DFG); Ministry of Education and Science (Russian Federation)
OSTI Identifier:
1499994
Grant/Contract Number:  
SC0012670; 14.Z50.31.0025
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 8; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; applied physics; electronic and spintronic devices

Citation Formats

Evelt, M., Safranski, C., Aldosary, Mohammed, Demidov, V. E., Barsukov, I., Nosov, A. P., Rinkevich, A. B., Sobotkiewich, K., Li, Xiaoqin, Shi, Jing, Krivorotov, I. N., and Demokritov, S. O. Spin Hall-induced auto-oscillations in ultrathin YIG grown on Pt. United States: N. p., 2018. Web. doi:10.1038/s41598-018-19606-5.
Evelt, M., Safranski, C., Aldosary, Mohammed, Demidov, V. E., Barsukov, I., Nosov, A. P., Rinkevich, A. B., Sobotkiewich, K., Li, Xiaoqin, Shi, Jing, Krivorotov, I. N., & Demokritov, S. O. Spin Hall-induced auto-oscillations in ultrathin YIG grown on Pt. United States. doi:10.1038/s41598-018-19606-5.
Evelt, M., Safranski, C., Aldosary, Mohammed, Demidov, V. E., Barsukov, I., Nosov, A. P., Rinkevich, A. B., Sobotkiewich, K., Li, Xiaoqin, Shi, Jing, Krivorotov, I. N., and Demokritov, S. O. Fri . "Spin Hall-induced auto-oscillations in ultrathin YIG grown on Pt". United States. doi:10.1038/s41598-018-19606-5. https://www.osti.gov/servlets/purl/1499994.
@article{osti_1499994,
title = {Spin Hall-induced auto-oscillations in ultrathin YIG grown on Pt},
author = {Evelt, M. and Safranski, C. and Aldosary, Mohammed and Demidov, V. E. and Barsukov, I. and Nosov, A. P. and Rinkevich, A. B. and Sobotkiewich, K. and Li, Xiaoqin and Shi, Jing and Krivorotov, I. N. and Demokritov, S. O.},
abstractNote = {We experimentally study nanowire-shaped spin-Hall nano-oscillators based on nanometer-thick epitaxial films of Yttrium Iron Garnet grown on top of a layer of Pt. We show that, although these films are characterized by significantly larger magnetic damping in comparison with the films grown directly on Gadolinium Gallium Garnet, they allow one to achieve spin current-driven auto-oscillations at comparable current densities, which can be an indication of the better transparency of the interface to the spin current. These observations suggest a route for improvement of the flexibility of insulator-based spintronic devices and their compatibility with semiconductor technology.},
doi = {10.1038/s41598-018-19606-5},
journal = {Scientific Reports},
number = ,
volume = 8,
place = {United States},
year = {2018},
month = {1}
}

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Figures / Tables:

Figure 1 Figure 1: Test devices. (a) Schematic of the experiment. Inset shows the SEM image of the device. (b) XRD of YIG film grown on Pt/GGG. Inset: Pt 111 peak. (c) HRTEM image of YIG/Pt/GGG multilayer.

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.