Multifrequency Spin-Wave Propagation for Parallel Data Processing Using Microstructured Yttrium Iron Garnet Thin Films

Sarker, Shamim; Nakamura, Shumpei; Yamahara, Hiroyasu; Seki, Munetoshi; Tabata, Hitoshi

doi:10.1109/tmag.2021.3087812

Cited by 5 publications

(3 citation statements)

References 29 publications

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“…The external field and shape anisotropy influence of the BVMSWs and of MSSWs were determined as follows. We first calculated the shape anisotropies by considering each YIG bar as a rectangular ferromagnetic prism, as explained in the literature 30 , 31 . The resulting calculated demagnetizing fields for the horizontal and vertical arms were A/m and A/m, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The resulting calculated demagnetizing fields for the horizontal and vertical arms were A/m and A/m, respectively. Since the crossbar is a connected structure, it must have a single demagnetizing field 31 . A close approximation of the actual demagnetizing field can be obtained from the vector sum of the of the demagnetizing fields of the horizontal and vertical arms, which gives, A/m.…”

Section: Resultsmentioning

confidence: 99%

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Reconfigurable magnon interference by on-chip dynamic wavelength conversion

Sarker

Yao

Yamahara

et al. 2023

Sci Rep

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Spin waves (SWs), an ultra-low power magnetic excitation in ferro or antiferromagnetic media, have tremendous potential as transport less data carriers for post-CMOS technology using their wave interference properties. The concept of magnon interference originates from optical interference, resulting in a historical taboo of maintaining an identical wavevector for magnon interference-based devices. This makes the attainment of on-chip design reconfigurability challenging owing to the difficulty in phase tuning via external fields. Breaking the taboo, this study explores a novel technique to systematically control magnon interference using asymmetric wavevectors from two different SW modes (magnetostatic surface SWs and backward volume magnetostatic SWs) in a microstructured yttrium iron garnet crossbar. Using this system, we demonstrate phase reconfigurability in the interference pattern by modulating the thermal landscape, modifying the dispersion of the interfering SW modes. Thus, we manifest that such a tunable interference can be used to implement reconfigurable logic gates operating between the XNOR and XOR modes by using symmetric and asymmetric interference, respectively.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Reconfigurable magnon interference by on-chip dynamic wavelength conversion

Sarker

Yao

Yamahara

et al. 2023

Sci Rep

Self Cite

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“…The propagation of SWs caused a change in local magnetization, inducing a voltage in the detection antenna according to Faraday's law. 31,32 The signal from the SWs was represented by using scattering parameters. The excitation of SWs commenced at CPW1, propagated through YIG, and culminated at CPW2.…”

Section: Figure 1a Illustrates a Schematic Diagram Of The Magnon Fet ...mentioning

confidence: 99%

Electrically Induced Redox Reaction Driven Magnon Field Effect Transistor

Sarker,

Yamahara,

Tang

et al. 2024

ACS Appl. Electron. Mater.

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Spin waves (SWs) stand out as one of the most promising candidates for postcomplementary metal-oxide semiconductor (CMOS) computing devices owing to their data transmission capability that is devoid of Joule heating and their inherent wave nature. However, realizing an electric-field-based, energy-efficient, and scalable control mechanism for both SW amplitude (corresponding to Gilbert damping) and frequency (corresponding to magnetization) remains an unaccomplished goal, which hinders their application as transistors. Through this study, we present an innovative approach centered around an electric-field-controlled dynamic redox reaction, aiming to manipulate SW amplitude and resonance frequency in a ferrimagnetic yttrium iron garnet (Y 3 Fe 5 O 12 , YIG) within a Au/poly(3,4 ethylenedioxythiophene) polystyrenesulfonate (PEDOT:PSS)/Pt/YIG heterostructure. In this proposed model, the applied electric field facilitates oxidation and reduction processes within PEDOT:PSS, triggering inversion and depletion of charge carriers within the Pt layer. This cascading effect subsequently modifies the spin−orbit interaction of Pt by displacing d-orbital energies both upward and downward. This phenomenon is proposed to affect spin pumping and spin relaxation from YIG to Pt under ferromagnetic resonance conditions, resulting in Gilbert damping and manipulation of magnetization within the YIG layer.

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Effect of strain-induced anisotropy on magnetization dynamics in Y3Fe5O12 films recrystallized on a lattice-mismatched substrate

Krysztofik

Ozoglu

McMichael

et al. 2021

Sci Rep

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We report on the correlation of structural and magnetic properties of Y3Fe5O12 (YIG) films deposited on Y3Al5O12 substrates using pulsed laser deposition. The recrystallization process leads to an unexpected formation of interfacial tensile strain and consequently strain-induced anisotropy contributing to the perpendicular magnetic anisotropy. The ferromagnetic resonance linewidth of YIG is significantly increased in comparison to a film on a lattice-matched Gd3Ga5O12 substrate. Notably, the linewidth dependency on frequency has a negative slope. The linewidth behavior is explained with the proposed anisotropy dispersion model.

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Multifrequency Spin-Wave Propagation for Parallel Data Processing Using Microstructured Yttrium Iron Garnet Thin Films

Cited by 5 publications

References 29 publications

Reconfigurable magnon interference by on-chip dynamic wavelength conversion

Reconfigurable magnon interference by on-chip dynamic wavelength conversion

Electrically Induced Redox Reaction Driven Magnon Field Effect Transistor

Effect of strain-induced anisotropy on magnetization dynamics in Y3Fe5O12 films recrystallized on a lattice-mismatched substrate

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