Spin-Wave Phase Shifters Utilizing Metal–Insulator Transition

Никитин, А. А.; Vitko, V. V.; Никитин, А. А.; Устинов, А. Б.; Karzin, V. V.; Komlev, А. Е.; Kalinikos, B. A.; Lähderanta, E.

doi:10.1109/lmag.2018.2874172

Cited by 10 publications

(3 citation statements)

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“…Description of the observed effect physical mechanism and numerical calculations of the transmission characteristics of the YIG-VO2 regular structure were performed using the theory presented in our earlier works [36,37]. In contrast to the regular waveguide, the transmission characteristic of the MC composed of the YIG-VO2 bilayer is more complicated.…”

Section: (A) Microwave Measurements Of a Regular Structure Composed Of The Yig-vo2 Bilayermentioning

confidence: 99%

“…Further heating of the bilayer up to T = 348 K leads to an increase in the VO2 conductivity that results in a drop of the group delay time, as shown in Fig. 5f Like in the previous Subsection, the experimental results were treated using the early-developed theory [36,37]. Theoretical characteristics were calculated by means of a two-step algorithm.…”

Section: (A) Microwave Measurements Of a Regular Structure Composed Of The Yig-vo2 Bilayermentioning

confidence: 99%

“…Recently, our theoretical works predicted promising features of the metal-insulator transition (MIT) in the heterogeneous ferrite-vanadium dioxide structures [36,37]. Such transition is characterized with an abrupt change of the VO2 conductivity (by four or five orders of magnitude) near the phase transition temperature at ultrafast timescales [38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

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Metal–insulator switching of vanadium dioxide for controlling spin-wave dynamics in magnonic crystals

Никитин

Устинов

et al. 2020

Journal of Applied Physics

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The present work focuses on the effect of vanadium dioxide (VO2) films exhibiting a metal-insulator transition (MIT) on performance characteristics of the magnetic multilayers. It has been shown that the MIT provides a novel mechanism for controlling the microwave spin-wave dynamics in the yttrium-iron garnet (YIG) films. In particular, the low and high levels of microwave attenuation of spin waves transmitted through the YIG-VO2 bilayer has been observed due to a variation of the VO2 conductivity within a narrow temperature range. This effect has been utilized to realize fully reconfigurable magnonic crystals composed of the thickness-modulated YIG and regular VO2 films. Promising functionality of the proposed waveguiding structures arises from a controllability of wave intensity, which provides altering of the frequency response from an original band structure to a full rejection of spin waves.Numerical simulations taking into account both the YIG-film saturation magnetization and the VO2-film conductivity have confirmed the experimentally observed spin-wave dynamics. An interest in ferrite-VO2 bilayers arises not only from possible practical applications, but also from a variety of fundamental scientific problems devoted to physics of wave phenomena in planar thin-film magnetic multilayers.

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Section: (A) Microwave Measurements Of a Regular Structure Composed Of The Yig-vo2 Bilayermentioning

confidence: 99%

Section: (A) Microwave Measurements Of a Regular Structure Composed Of The Yig-vo2 Bilayermentioning

confidence: 99%