Magnonic Holographic Read-Only Memory
Magnonic Holographic Read-Only Memory
复制标题
磁全息只读存储器
DOI：
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发表时间：
2016
影响因子：
1.2
通讯作者：
A. Khitun
中科院分区：
文献类型：
--
作者：
F. Gertz;A. Kozhevnikov;Y. Filimonov;A. Khitun
在这项工作中，我们考虑的可能性，建立磁全息只读存储器（MH-ROM）设备利用自旋波干涉读出。MH-ROM由通过交叉结连接的磁波导网格组成。一些交叉点在交叉点的中心有一个孔，而另一些则没有。将有无空洞分别分配给存储器状态0和1。我们目前的实验数据显示自旋波传播修改坡莫合金交叉结由于存在的孔。结果表明，MH-ROM具有明显的自旋波调制效应，与光盘ROM（CD-ROM）类似，可以通过自旋波干涉来识别内部存储状态。使用自旋波代替光束的优点是可扩展性和与传统电子器件的兼容性。存储器密度与工作波长成反比。根据估算，在波长λ = 100 nm时，MH-ROM的存储密度可达1 Tb/cm ~ 2。我们讨论了与自旋波干涉相关的物理限制和物理约束。MH-ROM的发展为构建与传统电子设备兼容的可扩展全息设备开辟了新的视野。
In this work, we consider the possibility of building magnonic holographic read-only memory (MH-ROM) devices exploiting spin-wave interference for readout. MH-ROM consists of a grid of magnetic waveguides connected via cross junctions. Some of the cross junctions have a hole in the center of junctions, whereas others do not. The presence/absence of the hole is assigned to the memory states 0 and 1, respectively. We present experimental data showing spin-wave propagation modification in the Permalloy cross junction due to the presence of the hole. The results show prominent spin-wave modulation which is applicable for application in MH-ROM. Similar to the optical compact-disk ROM (CD-ROM), the internal memory states can be recognized via spin-wave interference. The advantages of using of spin waves instead of optical beams are scalability and compatibility with conventional electronic devices. The memory density scales inversely proportional to the operational wavelength. According to the estimates, the memory density of MH-ROM can be 1 Tb/cm2 at wavelength λ = 100 nm. We discuss the physical limitations and physical constrains associated with the spin-wave interference. The development of MH-ROMs opens a new horizon for building scalable holographic devices compatible with conventional electronic devices.
影响因子：
4
作者：
Au, Y.;Dvornik, M.;Kruglyak, V. V.
通讯作者：
Kruglyak, V. V.