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

Journal Article · · Scientific Reports
 [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

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.

Research Organization:
Univ. of California, Riverside, CA (United States); Univ. of Münster (Germany); Russian Academy of Sciences (RAS), Ekaterinburg (Russian Federation); Energy Frontier Research Centers (EFRC) (United States). Spins and Heat in Nanoscale Electronic Systems (SHINES)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); German Research Foundation (DFG); Ministry of Education and Science (Russian Federation)
Grant/Contract Number:
SC0012670; 14.Z50.31.0025
OSTI ID:
1499994
Journal Information:
Scientific Reports, Vol. 8; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 31 works
Citation information provided by
Web of Science

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Cited By (4)

Spin torque nano-oscillator driven by combined spin injection from tunneling and spin Hall current journal February 2019
Pure spin currents in magnetically ordered insulator/normal metal heterostructures journal July 2018
Dimensional crossover in spin Hall oscillators journal August 2020
Level attraction and exceptional points in a resonant spin-orbit torque system text January 2020

Figures / Tables (4)