Dipolar field-induced spin-wave waveguides for spin-torque magnonics

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

doi:10.1063/1.4905869

Cited by 56 publications

(12 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In contrast to the thin Py(5) film, the increased thickness strip supports propagating spin waves at the frequency of auto-oscillations, which are characterized by a large decay length. Thus, the energy of the confined oscillations can be radiated and directionally guided by the strip that plays the role of a magnonic nano waveguide 33 .…”

Section: Resultsmentioning

confidence: 99%

Excitation of coherent propagating spin waves by pure spin currents

et al. 2016

View full text Add to dashboard Cite

Utilization of pure spin currents not accompanied by the flow of electrical charge provides unprecedented opportunities for the emerging technologies based on the electron's spin degree of freedom, such as spintronics and magnonics. It was recently shown that pure spin currents can be used to excite coherent magnetization dynamics in magnetic nanostructures. However, because of the intrinsic nonlinear self-localization effects, magnetic auto-oscillations in the demonstrated devices were spatially confined, preventing their applications as sources of propagating spin waves in magnonic circuits using these waves as signal carriers. Here, we experimentally demonstrate efficient excitation and directional propagation of coherent spin waves generated by pure spin current. We show that this can be achieved by using the nonlocal spin injection mechanism, which enables flexible design of magnetic nanosystems and allows one to efficiently control their dynamic characteristics.

show abstract

Section: Resultsmentioning

confidence: 99%

Excitation of coherent propagating spin waves by pure spin currents

et al. 2016

View full text Add to dashboard Cite

show abstract

“…SWs with a specific frequency in the magnetic waveguide can reach their highest intensity near the ferromagnetic resonant (FMR) field. [25][26][27][28] Similarly, the waveguide under a specific magnetic field support the SWs near the FMR frequency to reach to the highest intensity. In addition, it has been predicted 29 that a permalloy (Py, Ni81Fe19) microstripe can inhomogeneously magnetize the laterally proximate yttrium iron garnet (YIG) microstripe due to its much higher saturation magnetization (Ms).…”

Section: Introductionmentioning

confidence: 99%

Spin-wave frequency division multiplexing in an yttrium iron garnet microstripe magnetized by inhomogeneous field

Zhang

Vogel

Holanda

et al. 2019

Applied Physics Letters

View full text Add to dashboard Cite

Spin waves are promising candidates for information processing and transmission in a broad frequency range. In the realization of magnonic devices, the frequency depended division of the spin wave frequencies is a critical function for parallel information processing. In this work, we demonstrate a proof-of-concept spin-wave frequency division multiplexing method by magnetizing a homogenous magnetic microstripe with an inhomogeneous field. The symmetry breaking additional field is introduced by a permalloy stripe simply placed in lateral proximity to the waveguide. Spin waves with different frequencies can propagate independently, simultaneously and separately in space along the shared waveguide. This work brings new potentials for parallel information transmission and processing in magnonics.

show abstract

“…The field of magnonics deals with the integration of electronics and magnons for data processing applications [4][5][6][7]. Key questions and challenges in the field of magnonics relate to dynamics of magnons in laterally confined magnonic waveguides and magnonic crystals [8], where magnons can display discrete wavenumbers due to dipolar or exchange interactions [9,10] and the magnon bandstructure can be tailored in analogy to photonic crystals [11,12]. Magnonic crystals can be artificially created in a topdown approach by introducing an extrinsic periodic modulation of a magnetic property to an otherwise uniform magnetic crystal or thin film.…”

mentioning

confidence: 99%