AI 中文总结
本研究提出基于耦合有源环电路网络的磁振组合存储器，其可编码比特数随耦合电路数量二次增长，实验实现室温下开关比超30 dB的27位二进制模式编码。
AI 中文摘要
磁振组合存储器（Magnonic Combinatorial Memory, MCM）是一种将信息比特编码在网络中信号传播路径上的存储器。本研究考虑基于耦合有源环电路（active ring circuit, ARC）网络的MCM，每个电路包含宽带放大器、磁振延迟线、可调谐滤波器、可调谐移相器和功率探测器。电路间通过在公共延迟线——铁氧体薄膜中传播的自旋波实现耦合，有源环电路中是否存在自激振荡取决于电路参数与电路耦合的组合。MCM的地址定义为移相器与滤波器状态的组合，而MCM状态定义为自激振荡的存在与否。电路间的耦合通过在铁氧体薄膜上方放置微磁体实现。网络中可编码的比特数随耦合电路数量呈二次增长，这一缩放特性相比传统存储器具有根本优势。我们展示了通过单晶钇铁石榴石Y₃Fe₂(FeO₄)₃（YIG）薄膜连接的三个磁振ARC的实验数据，数据呈现了编码27位二进制响应模式的示例，该模式对应27种实验可及的相位组合。结果表明，室温下MCM的开关比超过30 dB，运行稳定。本文还讨论了该方法的优缺点。
英文摘要
Magnonic Combinatorial Memory (MCM) is a type of memory where the bits of information are encoded in the signal propagation paths in the network. In this work, we consider MCM based on the network of a coupled active ring circuit (ARC). Each circuit includes a broadband amplifier, a magnonic delay line, an adjustable frequency filter, an adjustable phase shifter, and a power detector. The coupling between the circuits is via spin waves propagating in the common delay line - ferrite film. There may or may not be auto-oscillations in the active ring circuits, depending on the combination of circuit parameters and circuit coupling. The address of MCM is defined as the combination of the states of the phase shifters and frequency filters, while the MCM state is defined as the presence/absence of the auto-oscillations. The coupling between the circuits is achieved by placing micromagnets on top of the ferrite film. The number of bits that can be encoded in the network increases quadratically with the number of coupled circuits. This scaling provides a fundamental advantage over conventional memory. We present experimental data obtained for three magnonic ARCs connected via a single-crystal yttrium iron garnet Y3Fe2(FeO4)3 (YIG) film. The data illustrate an example of encoding a 27-bit binary response pattern, corresponding to the 27 experimentally accessible phase combinations. The results demonstrate a robust operation of MCM with an On/Off ratio exceeding 30 dB at room temperature. The advantages and shortcomings of the proposed approach are discussed.
