Spin pumping and the inverse spin-hall effect via magnetostatic surface spin-wave modes in Yttrium-Iron garnet/platinum bilayers

Balinsky, Michael; Ranjbar, Mahdy; Haidar, Mohammad; Dürrenfeld, Philipp; Khartsev, Sergiy; Slavin, A. N.; Åkerman, Johan; Dumas, Randy K.

doi:10.1109/lmag.2015.2471276

Cited by 11 publications

(4 citation statements)

References 29 publications

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“…Exemplarily, obtained results for three parametric pumping frequencies f p = 11.485 GHz (green curve), f p = 14.449 GHz (red curve), and f p = 17.094 GHz (blue curve) are shown in Figure . One can see that the spin pumping induced ISHE‐voltage is at maximum close to the field of the ferromagnetic resonances (FMR) for the respective pumping power, which agrees with previous measurements . For smaller and higher magnetic fields the measured signal decreases.…”

Section: Resultssupporting

confidence: 90%

Enhancement of the Spin Pumping Effect by Magnon Confluence Process in YIG/Pt Bilayers

Noack

Vasyuchka

Bozhko

et al. 2019

Physica Status Solidi (b)

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The experimental investigation of the spin pumping process by dipolar‐exchange magnons parametrically excited in in‐plane magnetized yttrium iron garnet/platinum bilayers is presented. The electric voltage generated in the platinum layer via the inverse spin Hall effect (ISHE) results from contributions of two opposite spin currents formed by the longitudinal spin Seebeck effect and by the spin pumping from parametric magnons. In the field‐dependent measurements of the spin pumping‐induced component of the ISHE‐voltage, a clearly visible sharp peak is detected at high pumping powers. It is found that the peak position is determined by the process of confluence of two parametrically excited magnons into one magnon possessing twice the frequency and the sum of the wavevectors of the initial magnons. It is demonstrated that under the action of a rather strong parametric pumping field this confluence process results in the increase of the total number of magnons in the magnetic sample, and thus leads to the enhancement of the spin pumping effect.

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Section: Resultssupporting

confidence: 90%

Enhancement of the Spin Pumping Effect by Magnon Confluence Process in YIG/Pt Bilayers

Noack

Vasyuchka

Bozhko

et al. 2019

Physica Status Solidi (b)

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“…При этом с контактов к Pt, расположенных вдоль направления, перпендикулярного n, измеряют величину ЭДС U = I e R, где R -сопротивление Pt [1][2][3][4][5]. Генерация ЭДС в структурах ЖИГ−Pt бегущими СВ изучалась как в геометрии поверхностных магнитостатических волн (ПМСВ), когда волновой вектор k перпендикулярен направлению касательного поля H (k ⊥ H) [6][7][8][9][10][11][12][13][14], так и в геометрии обратных объемных магнитостатических волн (ООМСВ), когда k H [13][14][15][16]. При этом в работах [6][7][8][9][10][11][12][13]…”

Section: Introductionunclassified

Генерация ЭДС магнитостатическими волнами в структуре ЖИГ(111)-Pt в слабых полях подмагничивания

Никулин¹,

Кожевников²,

Высоцкий³

et al. 2023

Физика Твердого Тела

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In a structure of an epitaxial film of yttrium iron garnet (YIG) with crystallographic orientation (111) 11.8 μm thick and a 5 nm thick platinum (Pt) film deposited on its surface, the effect of EMF generation in a platinum film during the propagation of magnetostatic waves (MSW) in the structure was studied at values of the tangential constant magnetic field H less than the saturation field H_s~65 Oe of the YIG film. The experiments were performed in a geometry where the field H was parallel to the crystallographic direction [1¯21] and to the MSW antennas, and the distances from the input antenna to the output antenna and to the Pt film were ~5 mm and ~0.5 mm, respectively. In the structure under consideration, at |H|<H_s, a stripe domain structure (SDS) was formed, which in fields |H|<H_1~5 – 7 Oe acquired a branching character in the near-surface layer. In the range of fields H_1<|H|<H_2≈40 Oe, MSW propagation was observed in the frequency band ∆F_1~ 300-550 MHz, which was accompanied by EMF generation due to the inverse spin Hall effect. In the interval H_2<|H|≤H_s, MSW propagation was observed in the frequency band ∆F_2≈ 750-1750 MHz, while the frequency interval in which the EMF signal was recorded turned out to be several times smaller due to the development of MSW parametric instability.

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“…Благодаря обменному и спин-орбитальному взаимодействию электроны проводимости в металле оказываются связаны с локализованными спинами в магнитном диэлектрике. Такая связь позволяет за счет спинового эффекта Холла [9,10] преобразовать электрический ток в спиновую волну (спиновый ток) и далее ее конвертировать в электрический ток (детектировать) с помощью обратного спинового эффекта Холла [11]; осуществлять детектирование ферромагнитного резонанса [12], бегущих спиновых волн [13,14] а также результатов интерференции СВ [15]; генерировать когерентные СВ [16] и контролировать их распространение [17].…”

Section: Introductionunclassified

Частотная зависимость смешанной спиновой проводимости структур YIG|Pt при спиновой накачке ПМСВ

Никулин¹,

Высоцкий²,

Селезнев³

et al. 2023

Физика Твердого Тела

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Spin pumping by traveling magnetostatic surface waves (MSSW) has been experimentally investigated in YIG|Pt structures made on the basis of 0.9, 4, 8, 14 and 18 µm thick YIG epitaxial films. It is found that at frequencies corresponding to the van Hove singularities in the density of states of the MSSW spectrum of the structure, the EMF value generated due to the inverse spin Hall effect increases. This increase is associated with an increase in the spin mixing conductance of the YIG|Pt interface due to an increase in the efficiency of electron-magnon scattering at the frequencies of van Hove singularities in the spin wave spectrum.

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Spin pumping and the inverse spin-hall effect via magnetostatic surface spin-wave modes in Yttrium-Iron garnet/platinum bilayers

Cited by 11 publications

References 29 publications

Enhancement of the Spin Pumping Effect by Magnon Confluence Process in YIG/Pt Bilayers

Enhancement of the Spin Pumping Effect by Magnon Confluence Process in YIG/Pt Bilayers

Генерация ЭДС магнитостатическими волнами в структуре ЖИГ(111)-Pt в слабых полях подмагничивания

Частотная зависимость смешанной спиновой проводимости структур YIG|Pt при спиновой накачке ПМСВ

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