Magnonic interferometric switch for multi-valued logic circuits

Abstract

Abstract:We investigated a possible use of the magnonic interferometric switches in multi-valued logic circuits. The switch is a three-terminal device consisting of two spin channels where input, control, and output signals are spin waves. Signal modulation is achieved via the interference between the source and gate spin waves. We report experimental data on a micrometer scale prototype based on Y 3 Fe 2 (FeO 4 ) 3 structure. The output characteristics are measured at different angles of the bias magnetic field. The On/Off ratio of the prototype exceeds 36 dB at room temperature. Experimental data is complemented by the theoretical analysis and the results of micro magnetic simulations showing spin wave propagation in a micrometer size magnetic junction. We also present the results of numerical modeling illustrating the operation of a nanometersize switch consisting of just 20 spins in the source-drain channel. The utilization of spin wave interference as a switching mechanism makes it possible to build nanometerscale logic gates, and minimize energy per operation, which is limited only by the noise margin. The utilization of phase in addition to amplitude for information encoding offers an innovative route towards multi-state logic circuits. We describe possible implementation of the three-value logic circuits based on the magnonic interferometric switches. The advantages and shortcomings inherent in interferometric switches are also discussed.2

One-Dimensional Magnonic Crystal With Cu Stripes for Forward Volume Spin Waves

“…MCs are based on phase interference of SWs, and many applications have been proposed or are in development based on the advantages of MCs for controlling SWs. In particular, MCs can be used in SW integrated circuits (ICs), including logic gates [22][23][24][25][26][27][28]. SW ICs have attracted attention as next-generation computing elements that generate only a few Joules of heat during propagation.…”

Brillouin-Mandelstam spectroscopy of standing spin waves in a ferrite waveguide

“…The first set of experiments is aimed at confirming the spin wave generation by the antennas via the inductive voltage measurements, and finding the optimum operational frequency f and at the fixed bias magnetic field H. Based on our prior studies of the spin wave propagation in YIG films, 7,13 we use the 1410 Oe bias magnetic field H and restrict the search region for the operation frequency from 6.0 GHz to 6.5 GHz. In Fig.…”

“…Understanding of the spin wave interference phenomena is the key to development of novel magnonic devices. [6][7][8] Brillouin-Mandelstam spectroscopy (BMS) is a powerful technique allowing for visualization of the spin waves in magnetic microstructures. [9][10][11] In this work, we report results of the experimental study of the spin wave interference in the Y 3 Fe 2 (FeO 4 ) 3 waveguide using BMS.…”

Распространение Спиновых Волн В Микроструктурах На Основе Пленок Железоиттриевого Граната, Декорированных Ферромагнитным Металлом

“…При этом важным звеном на пути построения миниатюрных магнонных устройств с развитой архитектурой является задача формирования и управления потоками СВ. В частности, формирование отдельных потоков СВ и обеспечение их взаимодействия необходимо для построения магнонной логики и устройств голографической памяти, основанных на интерференции СВ [4][5][6][7][8][9]. Представляет интерес также осуществление пространственночастотного разделения СВ и создание на их основе многоканальных СВЧ фильтров [10].…”

“…Первый основан на анизотропии свойств СВ и применении возбуждающих систем сложной формы [10][11][12][13][14][15][16] для осуществления эффектов фокусировки и пространственного разделения потоков СВ в тонкопленочном волноводе. Второй способ предполагает локализацию потока СВ за счет использования тонкопленочных волноводов ограниченной ширины [4][5][6][7][8][9][17][18][19][20].…”