Влияние Амплитуды Свч-Воздействия На Спиновый Ток Границы Платина/Железоиттриевый Гранат

Константинян, К.И.; Овсянников, Г.А.; Станкевич, К.Л.; Шайхулов, Т.А.; Шмаков, В.А.; Климов, А.А.

doi:10.21883/ftt.2021.09.51258.23h

Cited by 1 publication

(1 citation statement)

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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].…”

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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