Nanoconstriction-based spin-Hall oscillators

Demidov, V. E.; Urazhdin, Sergei; Zholud, Andrei; Садовников, А. В.; Demokritov, S. O.

doi:10.1109/intmag.2015.7157174

Cited by 10 publications

(13 citation statements)

References 3 publications

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“…Nanoconstriction-based SHNOs show a mode that evolves from the thermal FMR, as shown by microfocused BLS measurements and electrical detection [72], and is therefore comparable to the high-frequency mode of nanogap SHNOs. However, with the constricted geometry around the oscillation center, the presence of the bullet is hindered and the single-mode excitation can be detected with lower linewidths.…”

Section: E Shnos: Magnetodynamical Modesmentioning

confidence: 70%

“…Another approach is to utilize a nanogap between two highly conductive electrodes, injecting the necessary high current densities into a nanosized region of an extended FM/Pt bilayer [71]. In the more recent nanoconstriction-based SHNOs, both the FM and the Pt layer are patterned into a nanoscopic constriction [72]. Similar confinement of the SHE-induced spin current has been demonstrated in a 190 µm nanowire geometry [73].…”

Section: Shno Device Architectures and Materialsmentioning

confidence: 99%

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Spin-Torque and Spin-Hall Nano-Oscillators

et al. 2016

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This paper reviews the state of the art in spin-torque and spin Hall effect driven nano-oscillators. After a brief introduction to the underlying physics, the authors discuss different implementations of these oscillators, their functional properties in terms of frequency range, output power, phase noise, and modulation rates, and their inherent propensity for mutual synchronization. Finally, the potential for these oscillators in a wide range of applications, from microwave signal sources and detectors to neuromorphic computation elements, is discussed together with the specific electronic circuitry that has so far been designed to harness this potential.

QS 2016

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Section: E Shnos: Magnetodynamical Modesmentioning

confidence: 70%

Section: Shno Device Architectures and Materialsmentioning

confidence: 99%

Spin-Torque and Spin-Hall Nano-Oscillators

et al. 2016

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QS 2016

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“…Nano-constriction based spin Hall nano-oscillators (SHNOs) [404], [405] are a novel class of spin current driven, CMOS compatible [406], microwave nano-oscillators, which can be fabricated as small as 20 nm [407], [408], [409], and can be mutually synchronized in both one [410] and two dimensions [411]. Complete mutual synchronization of 64 such SHNOs in an 8x8 square array was recently shown to improve the quality factor an order of magnitude (170,000) compared to the best literature values for any spin current driven nano-oscillator [411].…”

Section: E Voltage Controlled Spin Hall Nano-oscillator Based Computi...mentioning

confidence: 99%

Advances in Magnetics Roadmap on Spin-Wave Computing

et al. 2022

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Magnonics addresses the physical properties of spin waves and utilizes them for data processing. Scalability down to atomic dimensions, operation in the GHz-to-THz frequency range, utilization of nonlinear and nonreciprocal phenomena, and compatibility with CMOS are just a few of many advantages offered by magnons. Although magnonics is still primarily positioned in the academic domain, the scientific and technological challenges of the field are being extensively investigated, and many proof-of-concept prototypes have already been realized in laboratories. This roadmap is a product of the collective work of many authors that covers versatile spin-wave computing approaches, conceptual building blocks, and underlying physical phenomena. In particular, the roadmap discusses the computation operations with Boolean digital data, unconventional approaches like neuromorphic computing, and the progress towards magnon-based quantum computing. The article is organized as a collection of sub-sections grouped into seven large thematic sections. Each sub-section is prepared by one or a group of authors and concludes with a brief description of current challenges and the outlook of further development for each research direction.

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“…All that, in principle, makes it possible to create a purely spintronic AFM-based nanooscillator, in which both the spin-current pumping and the desired signal readout is realized by use of the spin current (e.g., by means of the direct and inverse spin Hall effects) [51][52][53][54]. Such a generator could efficiently operate in the subterahertz and terahertz frequency ranges.…”

Section: Introduction and Formulation Of The Problemmentioning

confidence: 99%

“…If the spin current j sp is alternating, the desired signal is obtained in the form of an alternating electric current (for details, see works [57,59,98]). Such systems on the basis of ferromagnets have already been implemented, and their high efficiency has been demonstrated [51][52][53][54]. For the dynamic state described above, the polarization of the "reverse" spin current j sp is determined by the formula j sp ∝ [︀ sin 2 e − sin cos (e 1 cos + e 2 sin ) ]︀ .…”

Section: The Application Of Afm Disclinations In Spintronicsmentioning

confidence: 99%

Spin Dynamics in Antiferromagnets with Domain Walls and Disclinations

et al. 2020

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The spin dynamics in antiferromagnets with atomic dislocations and dislocation-induced spin disclinations has been discussed. It is shown how the usual sigma-model equation can be used to describe it. The dynamical states with the spatially inhomogeneous spin precession are studied. It is demonstrated that such an internal dynamics of the spin disclinations and the related domain walls can serve as a basis for creating a spin-Hall nanogenerator pumped with a spin current and characterized by a low excitation threshold.

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Nanoconstriction-based spin-Hall oscillators

Cited by 10 publications

References 3 publications

Spin-Torque and Spin-Hall Nano-Oscillators

Spin-Torque and Spin-Hall Nano-Oscillators

Advances in Magnetics Roadmap on Spin-Wave Computing

Spin Dynamics in Antiferromagnets with Domain Walls and Disclinations

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