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Title: Large Spin-Wave Bullet in a Ferrimagnetic Insulator Driven by the Spin Hall Effect

Journal Article · · Physical Review Letters
 [1];  [1];  [2];  [1];  [1];  [3];  [1];  [1];  [4];  [1];  [3];  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy
  3. Colorado State Univ., Fort Collins, CO (United States). Physics Dept.
  4. Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy

Due to its transverse nature, spin Hall effects (SHE) provide the possibility to excite and detect spin currents and magnetization dynamics even in magnetic insulators. Magnetic insulators are outstanding materials for the investigation of nonlinear phenomena and for novel low power spintronics applications because of their extremely low Gilbert damping. Here, we report on the direct imaging of electrically driven spin-torque ferromagnetic resonance (ST-FMR) in the ferrimagnetic insulator Y3Fe5O12 based on the excitation and detection by SHEs. The driven spin dynamics in Y3Fe5O12 is directly imaged by spatially-resolved microfocused Brillouin light scattering (BLS) spectroscopy. Previously, ST-FMR experiments assumed a uniform precession across the sample, which is not valid in our measurements. A strong spin-wave localization in the center of the sample is observed indicating the formation of a nonlinear, self-localized spin-wave `bullet'.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States); 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)
Grant/Contract Number:
AC02-06CH11357; SC0012670; ECCS-1231598; W911NF-14-1-0501
OSTI ID:
1248728
Alternate ID(s):
OSTI ID: 1236535
Journal Information:
Physical Review Letters, Vol. 116, Issue 5; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 57 works
Citation information provided by
Web of Science

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Cited By (21)

Long-distance spin transport in a disordered magnetic insulator journal July 2017
Organic-based magnon spintronics journal March 2018
Thickness dependence study of current-driven ferromagnetic resonance in Y 3 Fe 5 O 12 /heavy metal bilayers journal February 2017
Measurements of long-wavelength spin waves for the magnetic field in the Damon-Eshbach, backward-volume and forward-volume geometries of an yttrium iron garnet film journal March 2018
Pseudomorphic spinel ferrite films with perpendicular anisotropy and low damping journal August 2018
Spin–transfer torque oscillator in magnetic tunneling junction with short–wavelength magnon excitation journal May 2018
Bullets and droplets: Two-dimensional spin-wave solitons in modern magnonics (Review Article) journal July 2018
Spin wave propagation in ultrathin magnetic insulators with perpendicular magnetic anisotropy journal May 2019
Spin-orbit torque switching in perpendicular Y 3 Fe 5 O 12 /Pt bilayer journal May 2019
Ultrathin interfacial layer with suppressed room temperature magnetization in magnesium aluminum ferrite thin films journal September 2019
Fast micromagnetic simulations on GPU—recent advances made with $\mathsf{mumax}^3$ journal February 2018
Thermal effect in Pt/YIG heterostructure induced by direct microwave power injection journal January 2020
Auto-oscillating Spin-Wave Modes of Constriction-Based Spin Hall Nano-oscillators in Weak In-Plane Fields journal November 2018
Simultaneous Optical and Electrical Spin-Torque Magnetometry with Phase-Sensitive Detection of Spin Precession journal March 2019
Imaging Magnetization Structure and Dynamics in Ultrathin Y 3 Fe 5 O 12 / Pt Bilayers with High Sensitivity Using the Time-Resolved Longitudinal Spin Seebeck Effect journal April 2017
Dynamical mode coexistence and chaos in a nanogap spin Hall nano-oscillator journal September 2019
Spatial symmetry of spin pumping and inverse spin Hall effect in the Pt / Y 3 Fe 5 O 12 system journal October 2016
Thickness dependence study of current-driven ferromagnetic resonance in Y3Fe5O12/heavy metal bilayers text January 2017
Imaging Magnetization Structure and Dynamics in Ultrathin YIG/Pt Bilayers with High Sensitivity Using the Time-Resolved Longitudinal Spin Seebeck Effect text January 2016
Deficiency of the Bulk Spin Hall Effect Model for Spin-Orbit Torques in Magnetic Insulator/Heavy Metal Heterostructures text January 2017
High frequency dynamics modulated by collective magnetization reversal in artificial spin ice text January 2017